Electric Traction(Engineering > Electrical Engineering ) Questions and answers for exam Preparation

Question 1. 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

Explanation:-

Answer: Option C. -> 1925 - 1932

Question 2. _________ locomotive has the highest operational availability.

Electric
Diesel
Steam
All of the above

Explanation:-

Answer: Option A. -> Electric

Question 3. The return circuit for tram cars is through

Neutral wire
Rails
Cables
Common earthing

Explanation:-

Answer: Option B. -> Rails

Question 4. ________ have maximum unbalanced forces

Diesel saunters
Steam locomotives
Electric locomotives
Diesel locomotives

Explanation:-

Answer: Option B. -> Steam locomotives

Question 5. 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

Explanation:-

Answer: Option D. -> 3 to 5 km phps

Question 6. 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

Explanation:-

Answer: Option D. -> 0.16

Question 7. 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

Explanation:-

Answer: Option B. -> 1.6 to 4.0 km phps

Question 8. 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

Explanation:-

Answer: Option B. -> D.C. series motor

Question 9. Which of the following drives is suitable for mines where explosive gas exists?

Steam engine
Diesel engine
Battery locomotive
Any of the above

Explanation:-

Answer: Option C. -> Battery locomotive

Question 10. Overhead lines for power supply to tram cars are at a minimum height of

3 m
6 m
10 m
15 m

Explanation:-

Answer: Option C. -> 10 m