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For the following questions answer them individually
A ceiling fan uses
split-phase motor
capacitor start and capacitor run motor
universal motor
None of these
Which of the following statements regarding hysteresis motoris incorrect?
It is extremely sensitive to fluctuations in supply voltage
It is extremely insensitive to fluctuations in supply voltage
It is extremely hard in operation
t is extremely quiet in operation
In repulsion motordirection of rotation of motor
is opposite to that of brush shift
is the same as that of brush shift
is independent of brush shift
f starting winding of a single-phase induction motoris left in the circuit, it will
run faster
sparkat light loads
draw excessive current and overheat
run slower
A schrage motor can run on
zero slip
negative slip
positive slip
All options are correct
DC shunt generator has _____.
slightly drooping characteristics
appreciably rising characteristics
constant voltage characteristics
appreciably falling characteristics
Which distribution system is more reliable?
Ring main system
Tree system
Radial system
All are equally reliable
The most important components required for transmission line are
poles and towers
conductors
Insulators
poles, towers, conductors and insulators
Which ofthe following is a leading power factor system?
Underground cables
Reactors
Mercury arc rectifiers
Transformers
The metallic sheath is usually made of
lead
aluminium
lead or aluminium
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