A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart...

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span?
by

1 Answer

Answer :

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span 4.0 cm.

by

Related questions

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span (A) 2.5 cm (B) 3.0 cm (C) 4.0 cm (D) 5.0 cm

Description : A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20  meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span  (A) 2.5 cm  (B) 3.0 cm  (C) 4.0 cm  (D) 5.0 cm 

Last Answer : (C) 4.0 cm

The resistance of a few meters of wire conductor in closed electrical circuit is?

Description : The resistance of a few meters of wire conductor in closed electrical circuit is?

Last Answer : The resistance of a few meters of wire conductor in closed electrical circuit is practically zero.

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

Description : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

Last Answer : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.4 ohm.

What gauge wire is in ethernet cable?

Description : What gauge wire is in ethernet cable?

Last Answer : “Cat 5 cable typically has three twists per inch of each twisted pair of 24 gauge (AWG) copper wires within the cables.” (source)

How to Wire Speakers

Description : How to Wire Speakers

Last Answer : How to Wire Speakers Powerful speaker serve many purposes. Amongst these purposes are entertainment during special occasions and event sound system. To maximize its use, you need to understand how much ... long screws rather than short ones. Short screws may not be able to properly secure speakers.

How to Wire a Lamp

Description : How to Wire a Lamp

Last Answer : How to Wire a Lamp Wiring a lamp is something you need to do just in case your lamp breaks, and it so happens you keep on forgetting to get it repaired. It's a relatively easy process, with ... by yourself will also be a great help if you found the perfect lampshade from the flea market. Good luck.

How to Wire a House

Description : How to Wire a House

Last Answer : How to Wire a House Wiring a home is a challenging but worthwhile task. Familiarize yourself with things involved in wiring a home before you start this project. Make this your first priority because ... out more by hiring someone with both experience and expertise to help you in your first attempt.

How to Wire a Three-Way Switch ?

Description : How to Wire a Three-Way Switch ?

Last Answer : How to Wire a Three-Way Switch A three-way switch is the most common system installed in residential areas. This system is used to control a light and receptacle or more from two different switches ... wires for interior use. #14 wires are suggested to be used for protected circuits at 15 amperes.

How to wire a Ceiling Fan ?

Description : How to wire a Ceiling Fan ?

Last Answer : How to wire a Ceiling Fan To wire a ceiling fan is a relatively easy project. Usually, it is similar to working on replacing an existing light fixture. However, you will also need to check the ... have a loose wire connection. In case your fan vibrates or shakes, check if the blades are balanced.

What happens when a neutral wire touches a phase wire ?

Description : What happens when a neutral wire touches a phase wire ?

Last Answer : Maximum current flow due to Short circuit, limited value of fuse will burn else apparatus and conductor will be damaged.

Which wire can carry a higher current stranded wire or solid wire?

Description : Which wire can carry a higher current stranded wire or solid wire?

Last Answer : From the formula R=PL/A resistance rise with the fall of surface area ,inverse proportion relation between Resistance and Area ,so stranded wire has more area that a solid wire so more area less resistance. Less resistance/less electron flow opposition,more electron flow (current)

Why should switch be connected only on the live wire and never on the neutral wire?

Description : Why should switch be connected only on the live wire and never on the neutral wire?

Last Answer : Current runs from the transformer, through the protective device, through the load and back through the protective device (if on RCD).  If the protective device is only a CB the current passes ... the circuit will operate correctly but this is an unsafe practice and does not meet the standards.

State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

Description : State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

Last Answer : i) Function of Cable box: To hold and inspect incoming and outgoing terminals  ii) Function of Guard wire : A grounded conductor placed beneath an overhead transmission line in order to ground ... in service connection: To give mechanical Support to pole, line and prevent leakage current if any

The function of steel wire in ACSR conductors is

Description : The function of steel wire in ACSR conductors is (A) To take care of surges. (B) To reduce corona. (C) To reduce inductance. (D) To provide additional mechanical strength

Last Answer : The function of steel wire in ACSR conductors is To provide additional mechanical strength

A fuse wire should have :

Description : A fuse wire should have :  (A) Low specific resistance and high melting point (B) Low specific resistance and low melting point (C) High specific resistance and high melting point (D) High specific resistance and low melting point

Last Answer : A fuse wire should have : High specific resistance and low melting point

Increasing the number of turns of wire on the secondary of a transformer will

Description : Increasing the number of turns of wire on the secondary of a transformer will  (A) Decrease the secondary current (B) Increase the primary current (C) Have no effect on the secondary current (D) Increase the secondary current

Last Answer : Increasing the number of turns of wire on the secondary of a transformer will Decrease the secondary current 

For a round wire, the approximate value of fusing current is given by

Description : For a round wire, the approximate value of fusing current is given by

Last Answer : For a round wire, the approximate value of fusing current is given by  K√d3

Aluminium is not used as winding wire for the armature of a dc machine because

Description : Aluminium is not used as winding wire for the armature of a dc machine because  (1) aluminium has low resistivity (2) a large winding space is taken by aluminium conductors and creates ... ) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

Last Answer : Aluminium is not used as winding wire for the armature of a dc machine because  (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

lf the wire which is vertical to this page has electron flow downwards the conductor will have

Description : lf the wire which is vertical to this page has electron flow downwards the conductor will have

Last Answer : lf the wire which is vertical to this page has electron flow downwards the conductor will have a counter-clockwise field in the plane of the paper

Nichrome wire is an alloy of?

Description : Nichrome wire is an alloy of?

Last Answer : Nichrome wire is an alloy of nickel and chromium.

Wire-wound resistors are unsuitable for use at high frequencies because they?

Description : Wire-wound resistors are unsuitable for use at high frequencies because they?

Last Answer : Wire-wound resistors are unsuitable for use at high frequencies because they exhibit unwanted inductive and capacitive effects.

In order to achieve high accuracy, the slide wire of a potentiometer should be?

Last Answer : In order to achieve high accuracy, the slide wire of a potentiometer should be as long as possible.

The ground wire should not be smaller than No ______ copper.

Last Answer : The ground wire should not be smaller than No 10 copper.

What happens when a current flows through a wire?

Description : What happens when a current flows through a wire?

Last Answer : Current can produce two effect one is heating effect and second is magnetic effect.

How do magnets and copper wire make electricity?

Description : How do magnets and copper wire make electricity?

Last Answer : According  to  Faradays  law , a changing  magnetic  field  on  a  conductor  induses  current  in  the  conductor  through   mutual  induction.

What is ACCC wire?

Description : What is ACCC wire?

Last Answer : Aluminum Conductor Composite Core

How is electricity passed through a wire?

Description : How is electricity passed through a wire?

Last Answer : A  wire contains  mobile  electrons  as  majority  charge  carriers  and  holes  as minority  charge carriers when  an emf  or   potential  diffrence is  provided , electrons  flow  in opposite  direction  with  holes(convection current  flow)

Which color wire is neutral?

Description : Which color wire is neutral?

Last Answer : Black but I think it depends with the place.

A spring with a force constant of 20 newtons per meter is known to obey Hooke's Law. The spring is attached to a mass of 5 kilograms and placed on a horizontal, frictionless surface. The mass is displaced 3 meters from its equilibrium position and released. What is the kinetic energy of the mass as it passes through its equilibrium position?

Description : A spring with a force constant of 20 newtons per meter is known to obey Hooke's Law. The spring is attached to a mass of 5 kilograms and placed on a horizontal, frictionless surface. The ... and released. What is the kinetic energy of the mass as it passes through its equilibrium position? 

Last Answer : ANSWER: 90 JOULES

Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 3.0 m and weighs 100 kg. The 55 kg man walks up to the 65 kg man and sits with him. If the boat is in still water the centre of mass of the system shifts by

Description : Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 3.0 m and weighs 100 kg. The 55 kg man walks up to the 65 kg man and sits with him. If the boat is in still water the centre of mass of the system shifts by

Last Answer : (4) zero

I've lost my memory, How do I caculate the value of this resistor?

Description : I've lost my memory, How do I caculate the value of this resistor?

Last Answer : Shoot me if I’m wrong, but don’t you need Ohm’s law for that: http://www.kpsec.freeuk.com/ohmslaw.htm?

An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?

Description : An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?

Last Answer : ANSWER: 2 METERS

The string in fig. is passing over small smooth pulley rigidly attached to trolley A. If the speed of trolley is constant and qual to `v_(A)` towards

Description : The string in fig. is passing over small smooth pulley rigidly attached to trolley A. If the speed of trolley is constant and qual to `v_(A)` towards

Last Answer : The string in fig. is passing over small smooth pulley rigidly attached to trolley A. If the speed of trolley is constant ... =0` D. `V_(B)=4/5 V_(A)`

Maximum distance apart of trolley refuges on bridges with main spans of 100metre or more is i. 50 mtr j. 100 mtr k. 200 mtr l. a refuge over each pair*

Description : Maximum distance apart of trolley refuges on bridges with main spans of 100metre or more is i. 50 mtr j. 100 mtr k. 200 mtr l. a refuge over each pair*

Last Answer : l. a refuge over each pair*

Mark correct option relating to limit of weigh of mails a) The weight to be carried by mail runner on a man should not exceed 14 Kg b) When it is carried by each man should not exceed 28 Kg c) When it is carried by trolley the weight of the parcel should not exceed 37 Kg d) The weight of postal articles including parcel and cash to be carried by a postman or village postman should not exceed 10 kg e) All the above

Description : Mark correct option relating to limit of weigh of mails a) The weight to be carried by mail runner on a man should not exceed 14 Kg b) When it is carried by each man should not exceed 28 Kg c) ... and cash to be carried by a postman or village postman should not exceed 10 kg e) All the above

Last Answer : e) All the above

What would be the physical length of a tpical coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz? A. 20 meters B. 3.51 meters C. 2.33 meters D. 0.25 meter

Description : What would be the physical length of a tpical coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz? A. 20 meters B. 3.51 meters C. 2.33 meters D. 0.25 meter

Last Answer : B. 3.51 meters

A 50 millimeter focal length camera lens photographs a 4 meter tall tree at a distance of 20 meters. How tall is the image of the tree?

Description : A 50 millimeter focal length camera lens photographs a 4 meter tall tree at a distance of 20 meters. How tall is the image of the tree?

Last Answer : ANSWER: 10 MILLIMETERS

A straight wire of length 0.20 m moves at a steady speed of 3.0 m s-1 at right angles to the magnetic field of flux density 0.10 T. The e.m.f induced across ends of wire is A. 0.5 V B. 0.06 V C. 0.05 V D. 0.04 V

Description : A straight wire of length 0.20 m moves at a steady speed of 3.0 m s-1 at right angles to the magnetic field of flux density 0.10 T. The e.m.f induced across ends of wire is A. 0.5 V B. 0.06 V C. 0.05 V D. 0.04 V

Last Answer : 0.06 V

A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of: w) 1000 x) 3000 y) 5000 z) 7000

Description : A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of: w) 1000 x) 3000 y) 5000 z) 7000

Last Answer : ANSWER: X -- 3000

If is the pull applied at the ends of tape in kg, is the length of tape between end marks in metres, is the weight of the tape in kg per metre run, then sag correction (A) C = w²l3 /24F² (B) C = w 3 l²/24F² (C) C = w²l3 /24F3 (D) C = 24w²l3 /80F

Description : If is the pull applied at the ends of tape in kg, is the length of tape between end marks in metres, is the weight of the tape in kg per metre run, then sag correction (A) C = w²l3 /24F² (B) C = w 3 l²/24F² (C) C = w²l3 /24F3 (D) C = 24w²l3 /80F

Last Answer : (A) C = w²l3 /24F²

A body weighs slightly more at the poles than at the equator because (a) the earth is flat at the poles. (b) the earth has the maximum speed of rotation at the equator (c) the attractive force at the poles increases due to the ice cap (d) none of these is a complete explanation

Description : A body weighs slightly more at the poles than at the equator because (a) the earth is flat at the poles. (b) the earth has the maximum speed of rotation at the equator (c) the attractive force at the poles increases due to the ice cap (d) none of these is a complete explanation

Last Answer : Ans:(d)

A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second. If she bends down and scoops up a 20 kilogram child standing on the ice, what will be the final speed of the skater and the child? w) 1 meter per second x) 3 meters per second y) 5 meters per second z) 7 meters per second

Description : A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second. If she bends down and scoops up a 20 kilogram child standing on the ice, what will be the final speed of the skater ... w) 1 meter per second x) 3 meters per second y) 5 meters per second z) 7 meters per second

Last Answer : ANSWER: Y -- 5 METERS PER SECOND

A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a resistance box and a 2 volt battery. If a potent

Description : A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a resistance box and a 2 volt battery. If a potent

Last Answer : A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a ... Omega` C. `190 Omega` D. `90 Omega`

Is there a method to calculate how much a 20 kg weight weighs, when lifted by me, aged 54, compared to lifted by me, aged 22?

Description : Is there a method to calculate how much a 20 kg weight weighs, when lifted by me, aged 54, compared to lifted by me, aged 22?

Last Answer : No. The difference is not about your age, but about your body and mind at each point. There might be a weightlifter who has some standard or even some measure for how hard something feels to lift for ... a record or accurate memory of what weight felt what way to lift at some point in the past.

32 kmph 11.What is the weight per meter length of 52 kg Rail? a. 54.14 kg b. 50.25 kg c. 51.89 kg* d. 53.85 kg

Description : 32 kmph 11.What is the weight per meter length of 52 kg Rail? a. 54.14 kg b. 50.25 kg c. 51.89 kg* d. 53.85 kg

Last Answer : c. 51.89 kg*

A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the force exerted by the jet on the plate would be in the range a.15 - 20 kg b.20 - 25 kg c.5 - 10 kg d.25 - 30 kg e.10 - 15 kg

Description : A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the ... a.15 - 20 kg b.20 - 25 kg c.5 - 10 kg d.25 - 30 kg e.10 - 15 kg

Last Answer : a. 15 - 20 kg

One end of uniform wire of length Land of weight W is attached rigidly to a point in the roof and a weight `W_(1)` is suspended from its lower end. If

Description : One end of uniform wire of length Land of weight W is attached rigidly to a point in the roof and a weight `W_(1)` is suspended from its lower end. If

Last Answer : One end of uniform wire of length Land of weight W is attached rigidly to a point in the roof and a weight `W_(1)` ... 3W//4)]//S` D. `(W_(1)+W)//S`

Force per meter on two wires carrying a current of 1 A placed 1 m apart is equal to A. 6.7 × 10-11 N B. 9.0 × 109 N C. 2.0 × 10-7 N D. 3.0 × 10-4 N

Description : Force per meter on two wires carrying a current of 1 A placed 1 m apart is equal to A. 6.7 × 10-11 N B. 9.0 × 109 N C. 2.0 × 10-7 N D. 3.0 × 10-4 N

Last Answer :  2.0 × 10-7 N

A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is a.785 b.80N c.392.4N d.None of the above e.Tapered bearing

Description : A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is a.785 b.80N c.392.4N d.None of the above e.Tapered bearing

Last Answer : b. 80N