Practice Electric Traction Multiple Choice Questions Quiz-1 - MCQGeeks.com

Q.1

In case of locomotives the tractive power is provided by

Single cylinder double acting steam engine
Double cylinder, single acting steam engine
Double cylinder, double acting steam engine
Single stage steam turbine

Q.2

Main traction systems used in India are, those using

Electric locomotives
Diesel engine locomotives
Steam engine locomotives
All of the above

Q.3

If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?

0.3
0.26
0.225
0.16

Q.4

The rate of acceleration on suburban or urban service is in the range

0.2 to 0.5 km phps
1.6 to 4.0 km phps
5 to 10 km phps
15 to 25 km phps

Q.5

In India, electrification of railway track was done for the first time in which of the following years?

1820 - 1825
1880 - 1885
1925 - 1932
1947 - 1954

Q.6

In tram ways which of the following motors is used?

D.C. shunt motor
D.C. series motor
A.C. three phase motor
AC. single phase capacitor start motor

Q.7

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

Steam engine
Diesel engine
Battery locomotive
Any of the above

Q.8

_________ locomotive has the highest operational availability.

Electric
Diesel
Steam
All of the above

Q.9

The return circuit for tram cars is through

Neutral wire
Rails
Cables
Common earthing

Q.10

________ have maximum unbalanced forces

Diesel saunters
Steam locomotives
Electric locomotives
Diesel locomotives

Q.11

The braking retardation is usually in the range

0.15 to 0.30 km phps
0.30 to 0.6 km phps
0.6 to 2.4 km phps
3 to 5 km phps

Q.12

Overload capacity of diesel engines is usually restricted to

2 percent
10 percent
20 percent
40 percent

Q.13

Watt-hours per tonne km is usually the specific energy consumption for suburban services.

15 - 20
50 - 75
120 - 150
160 - 200

Q.14

The efficiency of diesel locomotives is nearly

20 to 25 percent
30 to 40 percent
45 to 55 percent
60 to 70 percent

Q.15

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

Cascade control
Pole changing
Rheostat control
Combination of cascade and pole changing

Q.16

Which of the following is the advantage of electric braking?

It avoids wear of track
Motor continues to remain loaded during braking
It is instantaneous
More heat is generated during braking

Q.17

Suri transmission is

Electrical pneumatic
Mechanical electrical
Hydro mechanical
Hydro pneumatic

Q.18

Which of the following is the disadvantage of electric traction over other systems of traction?

Corrosion problems in the underground pipe work
Short time power failure interrupts traffic for hours
High capital outlay in fixed installations beside route limitation
Interference with communication lines

Q.19

_______ was the first city in India to adopt electric traction.

Delhi
Madras (Chennai)
Calcutta (kolkata)
Bombay (Mumbai)

Q.20

Which of the following braking systems is used on steam locomotives?

Hydraulic system
Pneumatic system
Vacuum system
None of the above

Q.21

An ideal traction system should have

Easy speed control
High starting tractive effort
Equipment capable of withstanding large temporary loads
All of the above

Q.22

For which of the following locomotives the maintenance requirements are the least?

Steam locomotives
Diesel locomotives
Electric locomotives
Equal in all of the above

Q.23

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

Faster acceleration
No pollution problems
Better braking action
All of the above

Q.24

Due to which of the following coefficient of adhesion improves?

Rust on the rails
Dust on the rails
Sand on the rails
All of the above

Q.25

Tractive effort is required to

Accelerate the train mass
Overcome the gravity component of train mass
Overcome friction, windage and curve resistance
Do all of the above

Q.26

In case of a steam engine an average coal consumption per km is nearly

150 to 175 kg
100 to 120 kg
60 to 80 kg
28 to 30 kg

Q.27

The speed of a locomotive is controlled by

Flywheel
Gear box
Applying brakes
Regulating steam flow to engine

Q.28

Automatic signalling is used for which of the following trains ?

Mail and express trains
Superfast trains
Suburban and Urban electric trains
All trains

Q.29

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

22 V
440 V
5 kV
15 kV

Q.30

The steam engine provided on steam locomotives is

Single acting condensing type
Single acting non-condensing type
Double acting condensing type
Double acting non-condensing type

0 h : 0 m : 1 s