ECET EEE 2012-5

1. The Units for specific energy consumption related to traction is ______

A. Watt-hour/(Tonne-Km)
B. (Watt-hr)/km
C. Joules/sec
D. watt

Answer : A. Watt-hour/(Tonne-Km)
Explanation:-

2. In kando system of tract electrification ________ is converted into ______

A. single phase,dc
B. dc, single phase
C. single phase, three phase
D. three phase, single phase

Answer : C. single phase, three phase
Explanation:-

3. A train has a scheduled speed of 60kmpf between the stops which are 6km apart. The actual run time is _____ if the duration of stop is 60sec

A. 60sec
B. 360sec
C. 240sec
D. 300sec

Answer : D. 300sec
Explanation:-

4. Average speed of a train is dependant on

A. distance between two stops and run time
B. run time and stop time
C. stop time and acceleration
D. acceleration and deceleration

Answer : A. distance between two stops and run time
Explanation:-

5. The electric motor used for traction work should have _______

A. low starting torque
B. high starting torque
C. rise in speed with increase in load
D. no braking capability

Answer : B. high starting torque
Explanation:-

6. Tractive effort of an electric locomotive can be increased by

A. Increasing the supply voltage
B. Increasing the speed
C. Increasing the dead weight over the driving axles
D. Using high rating motors

Answer : D. Using high rating motors
Explanation:-

7. Tractive effort required for a train going down from an upgradiant is

A. less than tractive effort on level track
B. more than tractive effort on level track
C. equal to the tractive effort on level track
D. independant of mass of the train

Answer : A. less than tractive effort on level track
Explanation:-

8. The area under speed-time curve of a train represents

A. average speed
B. average acceleration
C. distance travelled
D. average velocity

Answer : C. distance travelled
Explanation:-

9. As the number of wire guage increase the cross sectional area of wire ______

A. increases
B. remains same
C. becomes negligible
D. decreases

Answer : D. decreases
Explanation:-

10. which of the following wiring is not visible outside?

A. conduit wiring
B. cleat wiring
C. casing and capping wiring
D. concealed wiring

Answer : D. concealed wiring
Explanation:-