Traction control

Which of the following is an advantage of electric traction over other methods of traction ?

• (a) Faster acceleration

• (b) No pollution problems

• (c) Better braking action

• (d) All of the above

Which of the following is the voltage for single phase A.C. system ?

• (a) 230 V

• (b) 440 V

• c) 5 kV

• (d) 15 kV

Long distance railways use which of the following ?

• (a) 200 V D.C.

• (b) 25 kV single phase A.C.

• (c) 25 kV two phase A.C.

• (d) 25 kV three phase A.C.

The speed of a locomotive is controlled by

• (a) flywheel

• (b) gear box

• (c) applying brakes

• (d) regulating steam flow to engine

In India diesel locomotives are manufactured at

• (a) Ajmer

• (b) Varanasi

• (c) Bangalore

• (d) Jamalpur

_______ locomotive has the highest operational availability.

• (a) Electric

• (b) Diesel

• (c)Steam

• (d)All the above

Which of the following drives is suitable for mines where explosive gas exists ?

• (a) Steam engine

• (b) Diesel engine

• (c) Battery locomotive

• (d) Any of the above

In tramways which of the following motors is used ?

• (a) D.C. shunt motor

• (b) D.C. series motor

• (c) A.C. three phase motor

• (d) AC. single phase capacitor start motor

Electric locomotives in India are manufactured at

• (a) Jamalpur

• (b) Bangalore

• (c) Chittranjan

• (d) Gorakhpur

Specific energy consumption becomes

• (a) more on steeper gradient

• (b) more with high train resistance

• (c) less if distance between stops is more

• (d) all of the above