Suri transmission is_________________?
A. electrical-pneumatic
B. mechanical-electrical
C. hydro-mechanical
D. hydro-pneumatic
Electric Traction
For 25 kV single phase system power supply frequency is_______________?
For 25 kV single phase system power supply frequency is_______________?
A. 60 Hz
B. 50 Hz
C. 25 Hz
D. 16 Hz
Locomotives with monometer bogies have_________________?
Locomotives with monometer bogies have_________________?
A. uneven distribution of tractive effect
B. suitability for passanger as well as freight service
C. lot of skidding
D. low co-efficient of adhesion
________________ frequency is not common in low frequency traction system?
________________ frequency is not common in low frequency traction system?
A. 40 Hz
B. 25 Hz
C. 16 Hz
D. non of these
Locomotive having monomotor bogies________________?
Locomotive having monomotor bogies________________?
A. has better coefficient of adhesion
B. are suited both for passanger as well as freight service
C. has better riding qualities due to the reduction of lateral forces
D. has all above qualities
Specific energy consumption is affected by which of the following factors ?
Specific energy consumption is affected by which of the following factors ?
A. Retardation and acceleration values
B. Gradient
C. Distance between stops
D. All of the above
Specific energy consumption is least in ________________ service?
Specific energy consumption is least in ________________ service?
A. main line
B. urban
C. suburban
Overhead lines for power supply to tramcars are at a minimum height of______________?
Overhead lines for power supply to tramcars are at a minimum height of______________?
A. 3 m
B. 6 m
C. 10 m
D. 15 m
Energy consumption in propelling the train is required for which of the following?
Energy consumption in propelling the train is required for which of the following?
A. Work against the resistance to motion
B. Work against gravity while moving up the gradient
C. Acceleration
D. All of the above
An ideal traction system should have_______________?
An ideal traction system should have_______________?
A. easy speed control
B. high starting tractive effort
C. equipment capable of with standing large temporary loads
D. all of the above