Motor starters are essential for

Related MCQs

• If the back emf in a dc motor varnishes suddenly, then the motor:
• A thick wire is used in dc series motor field winding than that in dc shunt motor:
• 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:
• A flywheel is employed with a dc compound motor to reduce the peak demand, the compound motor should be:
• The shaft torque in a DC motor is less than total armature torque because of ____in the motor
• ____ motor is a variable speed motor.
• For 20% increase in current, the motor that will give the greastest increase in torque is ___ motor
• A DC motor develops torque of the 100Nm at 400 rpm, at 300 rpm a motor will develop torque of___.
• The most suitable motor for elevators is the ___ motor.
• A 4 pole, 250V series motor has a wave connected armature with 1254 conductors. The flux per pole is 22mWb when the motor taking 50A. Iron and friction lossses amount to 1000W. Armature resistance 0.2Ω, series field resistance 0.2Ω. What is the speed of the motor___.