ELECTRIC TRACTION QUIZ

The coasting retardation is around

3.6 km phps

2.6 km phps

1.6 km phps

0.16 km phps

TRUE ANSWER : ?
YOUR ANSWER : ?

________ have maximum unbalanced forces.

Electric locomotives

Steam locomotives

Diesel locomotives

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Steam engine

Battery locomotive

Diesel engine

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

For three-phase induction motors which of the following is the least efficient method of speed control?

Combination of cascade and pole changing

Pole changing

Cascade control

Rheostat control

TRUE ANSWER : ?
YOUR ANSWER : ?

Energy consumption in propelling the train is required for which of the following?

All of the listed here

Work against gravity while moving up the gradient

Acceleration

Work against the resistance to motion

TRUE ANSWER : ?
YOUR ANSWER : ?

The overall efficiency of steam locomotive is around

15 to 20 percent

25 to 35 percent

5 to 10 percent

35 to 45 percent

TRUE ANSWER : ?
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Specific energy consumption becomes

More with high train resistance

More on steeper gradient

Less if distance between stops is more

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Methods can bring the locomotive to dead stop.

Plugging braking

Regenerative braking

None of the listed here

Rheostat braking

TRUE ANSWER : ?
YOUR ANSWER : ?

The horsepower of steam locomotives is

500 to 1000

Up to 1500

1500 to 2000

2500 to 3000

TRUE ANSWER : ?
YOUR ANSWER : ?

Long distance railways use which of the following?

25 kV three phase A.C.

25 kV single phase A.C.

200 V D.C.

25 kV two phase A.C.

TRUE ANSWER : ?
YOUR ANSWER : ?

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