Why are the D.C. motors preferred for traction applications ? – McqOptions

MCQOPTIONS

1.	Why are the D.C. motors preferred for traction applications ?
A.	Torque and speed are inversely proportional to armature current
B.	Torque is proportional to armature current
C.	Torque is proportional to square root of armature current
D.	The speed is inversely proportional to the torque and the torque is proportional to square of armature current
Answer» E.

Discussion

No Comment Found

Related MCQs

Which of the following motors one will choose to drive the rotary compressor ?
To get the speed of D.C, motor below the normal without wastage of electrical energyis used.
Which D.C. motor is generally preferred for cranes and hoists ?
For which of the following applications a D.C. motor is preferred over an A.C. motor ?
In case the back e.m.f. and the speed of a D.C. motor are doubled, the torque developedby the motor will
Which D.C. motor is preferred for elevators ?
Which of the following motors is most suitable for signalling devices and many kindsof timers ?
According to Fleming's left-hand rule, when the forefinger points in the direction of the field or flux, the middle finger will point in the direction of
One D.C. motor drives another D.C. motor. The second D.C. motor when excited anddriven
The mechanical power developed by a shunt motor will be maximum when the ratioof back e.m.f. to applied voltage is