In a railway track, two rails are joined end to end with a gap in between them because – (1) steel can be saved (2) accidents due to contraction in winter can be avoided (3) air-gaps are necessary for bearing the weight of running train (4) accidents due to expansion in summer can be avoided.

In a railway track, two rails are joined end to end with a gap in between them because – (1) steel can be saved (2) accidents due to contraction in winter can be avoided (3) air-gaps are necessary for bearing the weight of running train (4) accidents due to expansion in summer can be avoided.
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(4) accidents due to expansion in summer can be avoided. Explanation: The volume of materials changes depending on current temperature. Usually heat makes them expand, and cold leads them to contract. There have to be gaps to avoid strain on the tracks. The same applies in many other fields of engineering, i.e. bridge building.
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In a railway track, two rails are joined end to end with a gap tin between them because? A. Steel can be saved B. Accidents due to contraction in winter can be avoided C. Air gaps are necessary for bearing the weight of running train D. Accidents due to expansion in summer can be avoided (Answer) E. All of these

Description : In a railway track, two rails are joined end to end with a gap tin between them because? A. Steel can be saved B. Accidents due to contraction in winter can be avoided C. Air gaps are necessary ... of running train D. Accidents due to expansion in summer can be avoided (Answer) E. All of these

Last Answer : D. Accidents due to expansion in summer can be avoided (Answer)

In a railway track, two rails are joined end to end with a gap in between thembecause (1) steel can be saved (2) accidents due to contraction in winter can be avoided (3) air-gaps are necessary for bearing the weight of running train (4) accidents due to expansion in summer can be avoided.

Description : In a railway track, two rails are joined end to end with a gap in between thembecause (1) steel can be saved (2) accidents due to contraction in winter can be avoided (3) air-gaps are necessary for bearing the weight of running train (4) accidents due to expansion in summer can be avoided.

Last Answer :  accidents due to expansion in summer can be avoided.

A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : (1) avoid the tracks being distorted due to seasonal temperature variation Explanation: A small gap is left at the joints of rails in a railway track to provide space for the expansion of rail pieces when the temperature rises during summer.

A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : avoid the tracks being distorted due to seasonal temperature variation

A gap is left between two rails of a railway track to accommodate ______ of the metal. (1) areal expansion (2) volume expansion (3) liner expansion (4) apparent expansion

Description : A gap is left between two rails of a railway track to accommodate ______ of the metal. (1) areal expansion (2) volume expansion (3) liner expansion (4) apparent expansion

Last Answer : (3) liner expansion Explanation: The volume of materials changes depending on current temperature. Usually heat makes them expand, and cold leads them to contract. To a first approximation, the ... linear expansion coefficient". It is the fractional change in length per degree of temperature change.

A gap is left between two rails of a railway track to accommodate...... of the metal. (1) areal expansion (2) volume expansion (3) liner expansion (4) apparent expansion

Description : A gap is left between two rails of a railway track to accommodate...... of the metal. (1) areal expansion (2) volume expansion (3) liner expansion (4) apparent expansion

Last Answer : liner expansion

Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Description : Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the ... normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Last Answer : (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. Explanation: A vehicle moving at a fast speed on a straight rail/ road has ... it experiences an additional force, termed as centripetal force, acting towards the centre of the circle.

In railway tracks, a small gap is left between the rails _____. A. To permit the shrinkage of metal B. To save the cost of metal C. To allow for the expansion during heat D. None of the above

Description : In railway tracks, a small gap is left between the rails _____. A. To permit the shrinkage of metal B. To save the cost of metal C. To allow for the expansion during heat D. None of the above

Last Answer : ANSWER: C

In railway tracks, a small gap is left between the rails _____. A. To permit the shrinkage of metal B. To save the cost of metal C. To allow for the expansion during heat D. None of the above

Description : In railway tracks, a small gap is left between the rails _____. A. To permit the shrinkage of metal B. To save the cost of metal C. To allow for the expansion during heat D. None of the above

Last Answer : ANSWER: C

Railway tracks are banked on curves so that (a) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (b) Frictional force can be avoided between the tracks and wheels (c) Necessary centripetal force may be obtained from the horizontal component of the weight of the train (d) The train may not fly off in the opposite direction

Description : Railway tracks are banked on curves so that (a) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (b) Frictional force can be avoided between the tracks ... of the weight of the train (d) The train may not fly off in the opposite direction

Last Answer : Ans:(c)

Fish plated joint shall be avoided in check raisl and on the running rails within--------- from the end of level crossing a) 3 meters* b) 5 meters c) 10 meters d) 12 meters

Description : Fish plated joint shall be avoided in check raisl and on the running rails within--------- from the end of level crossing a) 3 meters* b) 5 meters c) 10 meters d) 12 meters

Last Answer : a) 3 meters*

Why gaps are left between two sections of a railway track?

Description : Why gaps are left between two sections of a railway track?

Last Answer : The gaps allow the expansion and contraction of rails during summer and winter season.

The weight of the rails depends upon A. Gauge of track B. Speed of train C. Spacing of Sleepers D. All the above

Description : The weight of the rails depends upon A. Gauge of track B. Speed of train C. Spacing of Sleepers D. All the above

Last Answer : D [All the above] Explanation: Indian Railways is divided into 18 zones. Recently added South Coast Railway zones in Indian Railway (2019).

Sakthi running at 27 kmph alongside a railway track in 272 metres ahead of the engine of a 240 metres long train running at 135 kmph in the same direction. In how much time will the train pass sakthi? A) 24 B) 29 C) 36 D) 17

Description :  Sakthi running at 27 kmph alongside a railway track in 272 metres ahead of the engine of a 240 metres long train running at 135 kmph in the same direction. In how much time will the train pass sakthi? A) 24 B) 29 C) 36 D) 17

Last Answer : ANSWER:D  Explanation:  Speed of the train = 135 kmph  Speed of sakthi = 27 kmph  Speed of train relative to sakthi = (135-27) kmph  =108 kmph  We have to find the time in seconds, so convert ... of the train = Distance / Time  Therefore Time taken = ( 512 / 30) sec  = 17 sec

Railway tracks are banked on curves so that – (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3)Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

Description : Railway tracks are banked on curves so that - (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Last Answer : (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train

Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

Description : Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Last Answer : Necessary centripetal force may be obtained from the horizontal component of the weight of the train

A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of (1) gravitational force between train and man. (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Description : A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of (1) gravitational force between train and man. (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Last Answer : (4) pressure difference due to fast moving air in between Explanation: When a fast-moving train passes a man standing on the platform at rest, the air between train and person also moves with ... higher pressure, and being behind the man standing close will tend to push him toward the train.

A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ . (1) gravitational force between train and man (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Description : A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ . (1) gravitational force between train and man (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Last Answer : pressure difference due to fast moving air in between

In case of Shot Welded Rails the fish plated joint should be avoided on Level Crossings within a distance of --------- from end of level crossing a) 3 meters b) 4 meters c) 5 meters d) 6 meters*

Description : In case of Shot Welded Rails the fish plated joint should be avoided on Level Crossings within a distance of --------- from end of level crossing a) 3 meters b) 4 meters c) 5 meters d) 6 meters*

Last Answer : d) 6 meters*

A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train? A.59 km/hr B.65 km/hr C.70 km/hr D.81 km/hr E. None of these

Description : A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed ... as the train? A.59 km/hr B.65 km/hr C.70 km/hr D.81 km/hr E. None of these

Last Answer : Answer-D (81 km/hr) Explanation4.5 km/hr =(4.5 x 5/18)m/sec =5m/4sec = 1.25 m/sec, and 5.4 km/hr =(5.4 x 5/18)m/sec =3m/2sec = 1.5 m/sec. Let the speed of the train be x m/sec. Then, (x - 1.25) ... - 12.75 => 0.1x = 2.25 => x = 22.5 Therefore Speed of the train =(22.5 x18 /5)km/hr = 81 km/hr.

A Superfast train overtakes two persons walking along a railway track. The first one walks at 9 km/hr. The other one walks at 10.8 km/hr. The train needs 16.8and 17seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train? A) 250 kmph B) 487kmph C) 162kmph D) 312kmph

Description : A Superfast train overtakes two persons walking along a railway track. The first one walks at 9 km/hr. The other one walks at 10.8 km/hr. The train needs 16.8and 17seconds respectively to overtake them. ... are walking in the same direction as the train? A) 250 kmph B) 487kmph C) 162kmph D) 312kmph

Last Answer : ANSWER:C Explanation:  Given that the first one walks at 9 km/hr convert the speed in the unit of m/sec  9 km/hr = (9*5/18) m/s  = 5/2 m/s  = 2.5 m/s  Another one walks at 10.8 km/hr ... the speed in the unit of km/hr  Speed of the train = (45*18/5)kmph  Speed of the train = 162 km/ hr

A train overtakes two girls walking along a railway track. The first girl walks at 9 km/hr. The other girl walks at 10.8 km/hr. The train needs 16.8 and 17 seconds respectively to overtake them. What is the speed of the train if both the girls are walking in the same direction as the train? A) 25 m/s B) 45 m/s C) 30m/s D) 40m/s

Description :  A train overtakes two girls walking along a railway track. The first girl walks at 9 km/hr. The other girl walks at 10.8 km/hr. The train needs 16.8 and 17 seconds respectively to overtake them. What is the speed of the ... in the same direction as the train? A) 25 m/s B) 45 m/s C) 30m/s D) 40m/s

Last Answer : ANSWER:B Explanation:  First girl speed = 9km/hr  = 9 * 5 / 18 m/s  = 5/2 m/s  = 2.5 m/s  second girl speed = 10.8 km/hr  = 10.8 * 5/18 m/s  = 54/18  = 3 m/s  Let the speed of the train ... x - 3) * 17  16.8x - 42 = 17x - 51  0.2x = 9  x = 45  Therefore the speed of the train is 45 m/s

Hammers and railway rails are normally made of(A) Mild steel(B) Dead mild steel(C) Medium carbon steel(D) High carbon stee

Description : Hammers and railway rails are normally made of (A) Mild steel (B) Dead mild steel (C) Medium carbon steel (D) High carbon stee

Last Answer : (D) High carbon stee

In your opinion, how many car accidents could be avoided if people simply paid attention to their driving?

Description : In your opinion, how many car accidents could be avoided if people simply paid attention to their driving?

Last Answer : About, three.

The following air gap readings were obtained from a horizontally mounted, bilge pump, induction motor, equipped with sleeve bearings: FWD END-AFT END, Top .045 - .049, Right Side .045 - .047, Left Side .045 - .047, Bottom .045 - .041 Which of the f A. both the aft and foward bearings should be replaced. B. Shims should be removed from the aft bearing. C. The forward bearing should be lowered. D. The aft bearing should be lowered.

Description : The following air gap readings were obtained from a horizontally mounted, bilge pump, induction motor, equipped with sleeve bearings: FWD END-AFT END, Top .045 - .049, Right Side .045 - .047, Left ... the aft bearing. C. The forward bearing should be lowered. D. The aft bearing should be lowered.

Last Answer : Answer: A

The following air gap readings were obtained from a horizontally mounted, bilge pump, induction motor, equipped with sleeve bearings: FWD END -AFT END, Top .045 - .049 , Right Side .045 - .047, Left Side .045 - .047 , Bottom .045 - .041 Which of the fo A. The aft bearing should be realigned or replaced. B. Shims should be removed from the aft bearing. C. The forward bearing should be lowered. D. The aft bearing should be lowered.

Description : The following air gap readings were obtained from a horizontally mounted, bilge pump, induction motor, equipped with sleeve bearings: FWD END -AFT END, Top .045 - .049 , Right Side .045 - .047, Left ... the aft bearing. C. The forward bearing should be lowered. D. The aft bearing should be lowered.

Last Answer : Answer: A

Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the (A) Packing may be crushed due to thermal expansion/contraction of the components of the equipments (B) Pressure drop in the equipment will be very high (C) Viscosity variation of the fluids may cause channelling/flooding (D) None of these

Description : Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the (A) Packing may be crushed due to thermal expansion/contraction of the ... C) Viscosity variation of the fluids may cause channelling/flooding (D) None of these

Last Answer : (A) Packing may be crushed due to thermal expansion/contraction of the components of the equipments

A girl is walking at a speed of 15 km/hr along a railway track. If she is 600 m ahead of the train which is 300 m long and runs at a speed of 180 km/hr in same direction, then what is the time required to pass a girl? A) 19.63sec B) 32sec C) 8.2sec D) 28.3sec

Description : A girl is walking at a speed of 15 km/hr along a railway track. If she is 600 m ahead of the train which is 300 m long and runs at a speed of 180 km/hr in same direction, then what is the time required to pass a girl? A) 19.63sec B) 32sec C) 8.2sec D) 28.3sec

Last Answer : ANSWER:A Explanation:  Speed of a girl = 15 km/hr  speed of train = 180 km/hr By using the condition, The speed values of train and the moving object are subtracted if they are moving in same ... /45.83 = 19.63  Hence the time taken by the train to cross the girl is 19.63seconds

Which process is used in welding the gaps in railway tracks ?

Description : Which process is used in welding the gaps in railway tracks ?

Last Answer : Gold Schmidt’s alumino thermi process

Consider the following statements: Web crippling due to excessive bearing stress can be avoided by 1. Increasing the web thickness 2. providing suitable stiffeners 3. Increasing the length of the bearing plates Which of these statements are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

Description : Consider the following statements: Web crippling due to excessive bearing stress can be avoided by 1. Increasing the web thickness 2. providing suitable stiffeners 3. Increasing the length of the bearing plates Which of these statements are ... only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

Last Answer : (d) 1, 2 and 3

In severe winter, in cold countries water pipes burst because – (1) Water expands on freezing (2) Contraction of water pipes (3) High atmospheric pressure (4) Combined effect of all the above three

Description : In severe winter, in cold countries water pipes burst because – (1) Water expands on freezing (2) Contraction of water pipes (3) High atmospheric pressure (4) Combined effect of all the above three

Last Answer : (1) Water expands on freezing Explanation: Most liquids have a quite simple behavior when they are cooled (at a fixed pressure): they shrink. The liquid contract as it is cooled; ... substance solidifies, which causes it to contract some more because crystalline solids are usually tightly packed.

In severe winter, in cold countries water pipes burst because (1) water expands on freezing (2) contraction of water pipes (3) high atmospheric pressure (4) combined effect of all the above three

Description : In severe winter, in cold countries water pipes burst because (1) water expands on freezing (2) contraction of water pipes (3) high atmospheric pressure (4) combined effect of all the above three

Last Answer : water expands on freezing

The calorie requirement of the body increases in winter as compared to summer because ore calories are necessary to

Description : The calorie requirement of the body increases in winter as compared to summer because ore calories are necessary to

Last Answer : Sustain body temperature

Why is a small gap left at the joint between two rails?

Description : Why is a small gap left at the joint between two rails?

Last Answer : Answer: To permit expansion of rails due to heat generated by friction of a moving train.

The train runs faster on BG than on MG rail because its speed is directly proportional to a) Weight of the train* b) Gauge width c)Policy of Railway Board d) Length of the train

Description : The train runs faster on BG than on MG rail because its speed is directly proportional to a) Weight of the train* b) Gauge width c)Policy of Railway Board d) Length of the train

Last Answer : a) Weight of the train*

Air over the oceans is colder in summer and warmer in winter compared with air over the continental regions. This is because (a) Water is translucent and has a relatively high heat capacity compared to dirt (b) Compared to dirt, a thicker layer of water participates in the seasonal cycle (c) The albedo of water is greater than that of land and thus reflects more solar radiation (d) Both A and B are true (e) The effect is due to the changes in circulation between continents and oceans

Description : Air over the oceans is colder in summer and warmer in winter compared with air over the continental regions. This is because (a) Water is translucent and has a relatively high heat capacity compared ... B are true (e) The effect is due to the changes in circulation between continents and oceans

Last Answer : (d) Both A and B are true

Vanadium steel is generally used for (A) Railway switches and crossing (B) Bearing balls (C) Magnets (D) Axles and spring

Description : Vanadium steel is generally used for (A) Railway switches and crossing (B) Bearing balls (C) Magnets (D) Axles and spring

Last Answer : Answer: Option D

Explain in brief expansion bearing for steel girder bridge.

Description : Explain in brief expansion bearing for steel girder bridge.

Last Answer : Types of Expansion Bearing: 1. Sliding Plate Bearing 2. Deep cast with curve plate 3. Rocker bearing with curved base 4. Rocker & roller bearing Types of Expansion Bearing:  1. Sliding Plate ... and the bottom shoe. Bottom shoe rests on number of steel rollers.

If is the speed of a locomotive in km per hour, g is the acceleration due to gravity, is the distance between running faces of the rails and is the radius of the circular curve, the required super elevation is (A) gV²/GR (B) Rg/GV² (C) GR/gV² (D) GV²/gR

Description : If is the speed of a locomotive in km per hour, g is the acceleration due to gravity, is the distance between running faces of the rails and is the radius of the circular curve, the required super elevation is (A) gV²/GR (B) Rg/GV² (C) GR/gV² (D) GV²/gR

Last Answer : (D) GV²/gR

_____ will submit the application of cases arising from railway accidents accompanied by the documents mentioned above, for the order of _____through ____ a) The Head of the office, Head of the circle, PMG b) The Supdt of PO, PMG, Account office c) The Head of the circle, DG, Audit office d) None of these

Description : _____ will submit the application of cases arising from railway accidents accompanied by the documents mentioned above, for the order of _____through ____ a) The Head of the office, Head of the circle, PMG b) The ... , PMG, Account office c) The Head of the circle, DG, Audit office d) None of these

Last Answer : c) The Head of the circle, DG, Audit office

Flower bearing in ber occurs during a. Spring b. Winter c. Summer d. Autumn

Description : Flower bearing in ber occurs during a. Spring b. Winter c. Summer d. Autumn

Last Answer : Autumn

What is the breaking of rocks due constant expansion and contraction called?

Description : What is the breaking of rocks due constant expansion and contraction called?

Last Answer : Exfoliation.

Major loss in sudden contraction in pipe flow is due to (A) Boundary friction (B) Flow contraction (C) Expansion of flow after sudden contraction (D) None of these

Description : Major loss in sudden contraction in pipe flow is due to (A) Boundary friction (B) Flow contraction (C) Expansion of flow after sudden contraction (D) None of these

Last Answer : (B) Flow contraction

Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Description : Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion ... due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Last Answer : (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings

A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Description : A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Last Answer : thermal stress

45 The function of conservator in a transformer is A. To protect against internal fault B. To reduce copper as well as core losses C. To cool the transformer oil D. To take care of the expansion and contraction of transformer oil due to variation of temperature of surroundings

Description : 45 The function of conservator in a transformer is A. To protect against internal fault B. To reduce copper as well as core losses C. To cool the transformer oil D. To take care of the expansion and contraction of transformer oil due to variation of temperature of surroundings

Last Answer : D. To take care of the expansion and contraction of transformer oil due to variation of temperature of surroundings

Fish plates are used in railway tracks to A. fix rails to the sleepers B. fix sleepers to the ground C. Join two rails D. join two coaches

Description : Fish plates are used in railway tracks to A. fix rails to the sleepers B. fix sleepers to the ground C. Join two rails D. join two coaches

Last Answer : C [Joint two rail] Explanation: In rail terminology, a fishplate, splice bar or joint bar is a metal bar that is bolted to the ends of two rails to join them together in a track.

If air gap readings for an electical generating machine have changed significantly from the last reading, you should check _________. A. the bearings B. insulation readings and machine cleanliness C. the prime mover thrust bearing D. the field coil bolts for the proper torque values

Description : If air gap readings for an electical generating machine have changed significantly from the last reading, you should check _________. A. the bearings B. insulation readings and machine cleanliness C. the prime mover thrust bearing D. the field coil bolts for the proper torque values

Last Answer : Answer: A

The air gap in an induction motor should be checked periodically with a feeler gage to detect ____________. A. rotor contact with the laminations B. changes in armature magnetic strength C. excessive bearing wear D. electrical damage to the rotor

Description : The air gap in an induction motor should be checked periodically with a feeler gage to detect ____________. A. rotor contact with the laminations B. changes in armature magnetic strength C. excessive bearing wear D. electrical damage to the rotor

Last Answer : Answer: C