A. it has longer free running period
B. it has longer coasting period
C. accelerating and braking periods are comparatively smaller
D. all of the above
Related Mcqs:
- In main line service as compared to urban and suburban service______________?
A. distance between the stops is more
B. maximum speed reached is high
C. acceleration and retardation rates are low
D. all of the above - The rate of acceleration on suburban orurban service is in the range_________________?
A. 0.2 to 0.5 km phps
B. 1.6 to 4.0 km phps
C. 5 to 10 km phps
D. 15 to 25 km phps - The rate of acceleration on suburban orurban services is restricted by the consideration of______________?
A. Engine power
B. Track curves
C. Passenger Discomfort
D. Track size - _______________watt-hours per tonne km is usually the specific energy consumption for suburban services?
A. 15—20
B. 50—75
C. 120—150
D. 160—200 - Quadrilateral speed-time curve pertains to which of the following services ?
A. Main line service
B. Urban service
C. Sub-urban service
D. Urban and sub-urban service - The voltage used for suburban trains in D.C. system is usually_______________?
A. 12 V
B. 24 V
C. 220 V
D. 600 to 750 V - Which of the following motors is preferred when quick speed reversal is the main consideration ?
A. Squirrel cage induction motor
B. Wound rotor induction motor
E. Synchronous motor
D. D.C. motor - An aeroplane of wingspan 10m flies from the equator towards the North Pole. The wings are perpendicular to the vertical component of the earths magnetic field (B = 4×10-5T). At maximum speed an emf of 96mV is induced across the wing tips. The maximum speed of the aeroplane is____________?
A. 150msec-1
B. 384msec-1
C. 38.4msec-1
D. 200msec-1 - The slope of a.c. load line is ______________ that of d.c. load line?
A. The same as
B. More than
C. Less than
D. None of the above - Specific energy consumption is least in ________________ service?
A. main line
B. urban
C. suburban
