Elastomeric bearings are made of natural or synthetic rubber of
shore hardness of approximately.
a) 30 to 40
b) 50 to 70*
c) 40 to 50  
d) 60 to 70

1 Answer

Answer :

b) 50 to 70

Related questions

Description : Height of crucible is kept from top surface of mould? (i) 30 mm (ii) 40 mm (iii) 50 mm* (iv) 60 mm

Last Answer : (iii) 50 mm*

Description : Minimum traffic block required for execution of AT Weld ? (i) 70 minutes (ii) 70-75 minute.* (iii) 60 mints (iv) 1 hrs and 30 mints

Last Answer : (ii) 70-75 minute.*

Description : Under what situation should engineers use pot bearings instead of elastomeric bearings?

Last Answer : In the event of high vertical loads combined with large angle of rotations, rubber bearings are undesirable when compared with pot bearings. For instance, elastomeric ... bearings are better alternatives than elastomeric bearings in such an scenario as suggested by David J. Lee.

Description : How to determine the size of elastomeric bearings?

Last Answer : For elastomeric bearing, the vertical load is resisted by its compression while shear resistance of the bearing controls the horizontal movements. The design ... and fatigue damage. The vertical stiffness of bearings is obtained by inserting sufficient number of steel plates.

Description : In the design of elastomeric bearings, why are steel plates inserted inside the bearings?

Last Answer : For elastomeric bearing to function as a soft spring, the bearing should be allowed for bulging laterally and the compression stiffness can be increased by limiting the amount of lateral bulging. To ... , the presence of metal plates does not affect the shear stiffness of the elastomeric bearings.

Description : Under What Circumstances Should Pot Bearings Be Used Instead Of Elastomeric Bearings?

Last Answer : Answer : Pot bearings are preferred over elastomeric bearings in situations where there are chances of high vertical loads in combinations of very large angle of rotations. Elastomeric bearings always ... Due to the above reasons pot bearings are preferred over elastomeric bearings in such cases.

Description : Why Are Steel Plates Inserted Inside Bearings In Elastomeric Bearings?

Last Answer : Answer : In order to make a elastomeric bearing act/ function as a soft spring it should be made to allow it to bulge laterally and also the stiffness compression can be increased by simply ... plates. But the presence of the metal plates does not affect the shear stiffness of the bearings.

Description : Last flag man is deputed at which distance from last detonator during protection of welding site . (i) 30 mts (ii) 50 mts (iii) 45 (iv) 60 mts

Last Answer : (iv) 60 mts

Description : Rails used for A T Welding shall not normally be welded? (i) 20 years old . (ii) 30 years old (iii) 40 years old (iv) 50 years old*

Last Answer : iv) 50 years old*

Description : Cross slope of the formation to have good drainage of Ballast section is a) 1 in 40* b) 1 in 50 c) 1 in 30 d) 1 in 20

Last Answer : a) 1 in 40*

Description : There should not be any combination joint on level crossing proper and its approaches up to a) 15 meters b) 30 meters c) 40 meters d) 50 meters

Last Answer : d) 50 meters

Description : What is the width of Head of 52 kg Rail section a. 70 mm b. 75 mm c. 67 mm* d. 60 mm

Last Answer : c. 67 mm*

Description : The percentage of the calcium eliminated in feces is (A) 10–20 (B) 30–40 (C) 50–60 (D) 70–90

Last Answer : Answer : D

Description : Cost of instrumentation in a modern chemical plant ranges from __________ percent of the total plant cost. (A) 5 to 10 (B) 20 to 30 (C) 40 to 50 (D) 60 to 70

Last Answer : (B) 20 to 30

Description : Consider a fuzzy set old as defined below Old = {(20, 0.1), (30, 0.2), (40, 0.4), (50, 0.6), (60, 0.8), (70, 1), (80, 1)} Then the alpha-cut for alpha = 0.4 for the set old will be (A) {(40, 0.4)} (B) {50, 60, ... , (30, 0.2)} (D) {(20, 0), (30, 0), (40, 1), (50, 1), (60, 1), (70, 1), (80, 1)}

Last Answer : (D) {(20, 0), (30, 0), (40, 1), (50, 1), (60, 1), (70, 1), (80, 1)}

Description : A girl covered a definite distance at same speed. Had she moved 6 km/hr faster, she would have taken 30 mins less. If she had moved 4 km/hr slower, she would have taken 30 mins more. The distance (in km) is. a) 50 b) 40 c) 70 d) 60

Last Answer : D Let distance = x km Rate = y km/hr x/y - x / (y+6) = 30/60 (x(y+6)-xy) / y(y+6) = ½ (xy +6x - xy) / y(y+6) = ½ 12x = y(y+6) ------------>1 And x/ (y-4) - x/y = 30/60 (Xy - x(y-4 ... = (y+6) / (y-4) 3y - 12 = 2y +12 Y = 24km Put y value in 1 we get 12x = 24 (24+6) 12x = 24 *30 X=60km

Description : Greasing of bearings of Steel girder bridges is done once in years.

Last Answer : Three

Description : The advantages of electrometric bearings are a) Permits movement of the structure in all directions b) Serves as a shock absorber due to anti-vibration properties of elestomeric c) better dispersion of longitudinal forces to the approaches d) All of the above*

Last Answer : d) All of the above*

Description : Mostly long span rail-cum road bridges are provided with a) rocker & roller bearings b) segmental roller with oil bath* c) Sliding bearings d) centralised bearings

Last Answer : b) segmental roller with oil bath

Description : Bearings for plate girders are -- a) roller bearing b) sliding bearings c) centralised articulated bearings* d) None of the above

Last Answer : c) centralised articulated bearings*

Description : Bearings are provided in bridges to transfer the load to a) Super structure b) Track c) Embankment d) Sub structure*

Last Answer : d) Sub structure*

Description : For rolling mark 60 kg/Sail/X/2010 the first testing in the field after initial testing of rails in rail manufacturing plant, will be done. (i) After test free period of 25%. (ii) After passage of every 40 ... period.* (iii) After passage of 200 GMT. (iv) On the basis of annual GMT of the section.

Last Answer : (ii) After passage of every 40 GMT traffic during test free period.*

Description : Aeration Of water is done to remove a) Odour* b) Colour c) Bacterias d) Hardness e) Turbidity

Last Answer : a) Odour*

Description : Speed restrictions is suggested for distressed bridges on Group II a) upto maximum of 15 kmph b) 25 kmph to 50 kmph* c) 75 kmph d) 60 kmph

Last Answer : b) 25 kmph to 50 kmph*

Description : Formation width for cuttings for B.G. single line section is (a) 5.40 m (b) 6.20 m (c) 6.25 m* (d) 6.50 m

Last Answer : (c) 6.25 m*

Description : The bottom of side drains should be below the formation level by at least------------ a) 45 cm b )30 cm* c) 15 cm d) 60 cm

Last Answer : b )30 cm*

Description : The danger level should be marked with a bright red band …… wide centrally over a white band …… wide for a length of……… a) 5 cm, 10 cm, 60 cms* b) 10 cm, 20 cm, 60 cm c) 15 cm, 30 mm, 60 cm d) None of the above

Last Answer : a) 5 cm, 10 cm, 60 cms*

Description : Torch is kept at height from top surface of rail head? (i) 30 to 55 mm (ii) 35 to 40 mm (iii) 40 to 45 mm

Last Answer : (iii) 40 to 45 mm

Description : Speed restriction required for using CC cribs as temporary arrangement is a) 20 kmph* b) 40 kmph c) 35 kmph d) 30 kmph

Last Answer : a) 20 kmph*

Description : What is speed restriction on deep screening site done by BCM and tamped by machine followed with DGS? (a) 20 (b) 30 (c) 40* (d) 10

Last Answer : (c) 40*

Description : Synthetic polymer which resembler natural rubber is:

Last Answer : Synthetic polymer which resembler natural rubber is: A. neoprene B. chloroprene C. glyptal D. nylon

Description : What Synthetic rubber has different monomers than natural rubber.?

Last Answer : synthetic rubber has different monomers than natural rubber.

Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) Another name of silicone rubber (C) A synthetic polymer (D) A synthetic monome

Last Answer : (C) A synthetic polymer

Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) A synthetic polymer (C) A synthetic monomer (D) Another name of silicone rubber

Last Answer : (B) A synthetic polymer

Description : Distinguish between natural rubber and synthetic rubber. 

Last Answer : Natural rubber Synthetic rubber  1. It is an elastic material obtained from a milky emulsion (latex) of rubber trees. 1. It is a rubber-like product obtained by some chemical reaction. 2. It ... organic solvents.  7. It is plastic in nature. 7. It is elastic in nature.

Description : Total assembly segments in Delhi are : (1) 50 (2) 60 (3) 70 (4) 40

Last Answer : (3) 70 Explanation: There are 70 assembly segments in Delhi. In accordance with the recommendations of the Balakrishnan Committee, the Parliament passed the Constitution (69th Amendment) Act, 1991, which ... and 239 AB in the Constitution providing, inter alia, for a Legislative Assembly for Delhi.

Description : Which of the following statements regarding cash flow patterns (for time periods 0, 1, 2, 3, and 4) is correct? A. The sequence of -Rs.100, Rs.50, Rs.40, Rs.60, and Rs.50 is a non-conventional cash ... -Rs.50, Rs.50, Rs.70, Rs.60, and -Rs.150 potentially has at most two internal rates of return.

Last Answer : B. The sequence of -Rs.100, Rs.600, -Rs.1,100, Rs.600, and Rs.20 potentially has a maximum of two internal rates of return.

Description : Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface ... C will be at a temperature of __________ °C. (A) 40 (B) 95 (C) 70 (D) 50

Last Answer : (C) 70

Description : According to FPO the residual SO2 in the jam should not exceed —- ppm a. 40 b. 50 c. 60 d. 70

Last Answer : a. 40

Description : A district road with a bituminous pavement has a horizontal curve of 1000 m for a design speed of 75 km ph. The super-elevation is (A) 1 in 40 (B) 1 in 50 (C) 1 in 60 (D) 1 in 70

Last Answer : Answer: Option A

Description : For the construction of cement concrete dams, the maximum permissible size of the aggregates, is (A) 40 mm (B) 50 mm (C) 60 mm (D) 70 mm

Last Answer : Answer: Option A

Description : Percentage content of silica in window glass, is (A) 40 to 45 (B) 50 to 55 (C) 60 to 65 (D) 70 to 75

Last Answer : Answer: Option D

Description : In verandah floors outward slope is (A) 1 in 40 (B) 1 in 50 (C) 1 in 60 (D) 1 in 70

Last Answer : Answer: Option C

Description : Standard disc plough diameter size is A. 40 to 60 cm C. 70 to 90 cm B. 60 to 90 cm D. 50 to 70 cm

Last Answer : 60 to 90 cm

Description : Transmission voltage of ll kV is normally used for distances upto (a) 20—25 km (b) 40—50 km (c) 60—70 km (d) 80—100 km

Last Answer : (a) 20—25 km

Description : Anitha travels 400 km by bus at 70 km/hr, 600 km by train at 80km/hr, 250 km by bike at 60 km/hr and 50 kn by car at 40 km/hr. what is the average speed for the total distance? a) 68.45 b) 69.45 c) 67.45 d) 69.77

Last Answer : D Total distance = (400+250+50+600)km =1300 km Total time taken = (400/70 + 600/80+250/60+50/40) hrs =(40/7 +60/8+25/6+5/4) =(24*40)+(21*60)+(28*25)+(42*5) / 168 =960+1260+700+210 / 168 =(3130 / 168) Average speed =(1300*168 / 3130) km/hr =218400/3130 =69.77 km/hr

Description : Brinell Hardness Number (BHN) for talc is approximately in the range of (A) 1-5 (B) 20-30 (C) 100 -150 (D) 200 - 250

Last Answer : (B) 20-30

Description : Brinell Hardness Number (BHN) for talc is approximately in the range of (A) 1-5 (B) 20-30 (C) 100-150

Last Answer : Option B

Description : The percent of total iron in body in hemoglobin is (A) 10–20 (B) 20–30 (C) 30–40 (D) 60–70

Last Answer : Answer : D

Description : Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

Last Answer : ANSWER d. 80-90