Which of the following motors is inherently self starting ?
None of these
Reluctance motor
Split motor
Shaded-pole motor
Shaded-pole motor
Short-circuit is used in
repulsion induction motor
repulsion motor
repulsion start induction run motor
none of the above
repulsion start induction run motor
The range of efficiency for shaded pole motors is
5% to 35%
50% to 75%
80% to 90%
95% to 99%
5% to 35%
A single-phase induction motor is
inherently non-self-starting with low torque
inherently self-starting with low torque
inherently self-starting with high torque
inherently non-self-starting with high torque
inherently non-self-starting with low torque
A schrage motor can run on
positive slip
all of the above
zero slip
negative slip
all of the above
A universal motor can run on
either A.C. or D.C.
A.C. only
D.C. only
none of the above
either A.C. or D.C.
In a split phase motor
centrifugal switch is used to control supply voltage
both starting and running windings are connected through a centrifugal switch
the running winding is connected through a centrifugal switch
the starting winding is connected through a centrifugal switch
the starting winding is connected through a centrifugal switch
Which of the following motor will have relatively higher power factor ?
Shaded pole motor
Capacitor start motor
Capacitor run motor
Split phase motor
Capacitor run motor
The direction of rotation of an hysteresis motor is determined by
position of shaded pole with respect to main pole
none of these
retentivity of the rotor material
interchanging the supply leads
position of shaded pole with respect to main pole
Burning out of winding is due to
short circuited capacitor
open circuiting of capacitor
capacitor value hiving changed
none of the above
short circuited capacitor
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