In a DC motor, unidirectional torque is produced with the help of

Related MCQs

• The shaft torque in a DC motor is less than total armature torque because of ____in the motor
• A DC motor develops torque of the 100Nm at 400 rpm, at 300 rpm a motor will develop torque of___.
• The armature torque of a DC motor running of 800rpm is 99.3Nm and shaft torque is 93.3Nm. The iron and friction losses are__.
• A 3 phase induction motor running with full load slip of 1.2% and its rotor impedance per phase on standstill is 0.016+j0.265Ω then the ratio of full load torque to maximum torque is
• A 3 phase induction motor is running with full load slip of 1.2% and its rotor impedance per phase is 0.06+j0.265Ω then ratio of starting torque to maximum torque is
• High starting torque can be produced by induction motor if
• A DC shunt motor is driving a constant torque load. On inserting an additional resistance in the armature circuit, the speed of the motor will:
• For 20% increase in current, the motor that will give the greastest increase in torque is ___ motor
• The armature torque is ------ that of shaft torque
• A 3 phase I.M. is running with full load slip of 1.2% and its rotor impedance per phase on standstill is 0.016+j0.265Ω then ratio of full load torque to starting torque is _____.