Q.1
In split-phase motor auxiliary winding is of
Q.2
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to
Q.3
The running winding of a single phase motor on testing with Meggar is found to be ground. Most probable location of the ground will be
Q.4
Which of the following motor will give relatively high starting torque ?
Q.5
Which of the following motors can be run on AC. as well as D.C. supply ?
Q.6
Which of the following applications always have some load whenever switched on ?
Q.7
In a split phase motor
Q.8
In a ceilingfan employing capacitor run motor
Q.9
Which of the following motors is used in a situation where load increases with speed ?
Q.10
Which of the following single-phase motors is suitable for timing and control purposes ?
Q.11
The wattage of motor for driving domestic sewing machine will be around
Q.12
Which of the following motors can be used for unity power factor ?
Q.13
If a D.C. series motor is operated on A.C. supply, it will
Q.14
In a capacitor start single-phase motor, when capacitor is replaced by a resistance
Q.15
Which of the following motors will operate at high power factor ?
Q.16
A hysteresis motor works on the principle of
Q.17
The value of starting capacitor of a fractional horse power motor will be
Q.18
Which of the following single-phase induction motors is generally used in time phonographs?
Q.19
In a capacitor start motor, the phase displacement between starting and running winding can be nearly
Q.20
The range of efficiency for shaded pole motors is
Q.21
The purpose of stator winding in the compensated repulsion motor is to
Q.22
Which type of load is offered by cranes and hoists ?
Q.23
Which of the following motors is preferred for tape-recorders?
Q.24
Which of the following motors has two separate windings on the motor ?
Q.25
In a single phase motor the centrifugal switch
Q.26
Short-circuiter is used in
Q.27
The capacitors used in single-phase capacitor motors have no
Q.28
Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because
Q.29
Which of the following motors is used for unity power factor ?
Q.30
The direction of rotation of universal motor can be reversed the by reversing the flow of current through
0 h : 0 m : 1 s