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A universal motor can run on?
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asked
Mar 20, 2018
by
anonymous
universal
motor
run
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1
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answered
Mar 20, 2018
by
anonymous
A universal motor can run on
either A.C. or D.C.
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asked
Mar 20, 2018
by
anonymous
A schrage motor can run on?
Last answer:
A schrage motor can run on zero slip, negative slip, positive slip.
schrage
motor
run
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51
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1
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Mar 20, 2018
by
anonymous
The repulsion start induction run motor is used because of?
Last answer:
The repulsion-start induction-run motor is used because of high starting torque.
repulsion
start
induction
run
motor
used
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61
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1
answer
asked
Mar 20, 2018
by
anonymous
The speed of a universal motor is generally reduced by using?
Last answer:
The speed of a universal motor is generally reduced by using gear trains.
speed
universal
motor
reduced
using
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70
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1
answer
asked
Mar 20, 2018
by
anonymous
The direction of rotation of universal motor can be reversed the by reversing the flow of current through?
Last answer:
The direction of rotation of universal motor can be reversed the by reversing the flow of current through either armature winding or field winding.
direction
rotation
universal
motor
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104
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1
answer
asked
Mar 20, 2018
by
anonymous
In a ceiling fan employing capacitor run motor?
Last answer:
In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.
ceiling
fan
capacitor
run
motor
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85
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1
answer
asked
Mar 20, 2018
by
anonymous
The speed of a universal motor is usually reduced by using?
Last answer:
The speed of a universal motor is usually reduced by using gearing.
speed
universal
motor
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78
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1
answer
asked
Mar 20, 2018
by
anonymous
Speed control of a universal motor is achieved by?
Last answer:
Speed control of a universal motor is achieved by varying field flux with tapped field windings, connecting rheostat in series, applying variable voltage by means of silicon controlled rectifier, applying variable voltage by means of variable auto-transformer.
speed
control
universal
motor
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1
answer
asked
Mar 20, 2018
by
anonymous
A universal motor is one which?
Last answer:
A universal motor is one which can be operated either on D.C. or A.C. supply at approximately the same speed and output.
universal
motor
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47
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1
answer
asked
Mar 20, 2018
by
anonymous
In a universal motor, the most common cause of brush sparking is?
Last answer:
In a universal motor, the most common cause of brush sparking is open armature winding, shorted armature winding, shorted field winding, high commutator mica.
universal
motor
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101
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1
answer
asked
Mar 20, 2018
by
anonymous
The speed/load characteristics of a universal motor is same as that of?
Last answer:
The speed/load characteristics of a universal motor is same as that of D.C. series motor.
speed
load
characteristics
universal
motor
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1
answer
asked
Aug 17, 2019
by
anonymous
State working principle of universal motor with the help of diagram.
State working principle of universal motor with the help of diagram.
Last answer:
Working Principle of Universal motor : It is modified DC series motor which can work on AC as well as DC supply. According to basic motor principle, whenever a current carrying conductor is placed in magnetic ... They have nearly same operating characteristic for both AC and DC supply.
universal
motor
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1
answer
asked
Aug 17, 2019
by
anonymous
applications of each: i) Universal motor ii) Stepper motor.
applications of each: i) Universal motor ii) Stepper motor.
Last answer:
i) Applications of Universal motor: 1) portable drills 2) hair dryers 3) grinders 4) mixers 5) table-fans 6) blowers 7) polishers 8) Kitchen appliances ii) Applications of Stepper motor ... 7) robotics 8) CNC machine 9) Control systems 10) Biomedical applications 10) XY recorder 11) plotters
universal
motor
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1
answer
asked
Jul 26, 2019
by
anonymous
State two applications of 1) Shaded pole motor 2) Universal motor
State two applications of 1) Shaded pole motor 2) Universal motor
Last answer:
(i)Applications of Shaded pole motor: 1. Small fans 2. Toy motors 3. Hair dryers 4. Ventilators 5. Electric clocks 6. Record players 7. Motorized valves 8. Gramophones 9. Photocopying ... 5. Portable Drilling Machines 6. Electric Shavers 7. Mechanical computing Machines 8. Machine Tools etc.
applications
shaded
pole
motor
universal
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98
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1
answer
asked
Jul 20, 2019
by
anonymous
Draw and explain working of universal motor. Give two applications of universal motor.
Draw and explain working of universal motor. Give two applications of universal motor.
Last answer:
Figure of Universal motor: Operation of universal motor on A.C. and D.C. supply: *A universal motor works on either DC or single phase AC supply. When the universal motor is ... , regardless of AC or DC supply, universal motor works on the same principle that DC series motor works.
universal
motor
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4
answers
asked
Mar 20, 2018
by
anonymous
The speed control of universal motor used for sewing machines is by?
Last answer:
The speed control of universal motor used for sewing machines is by varying the resistance.
speed
control
universal
motor
used
sewing
machines
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70
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1
answer
asked
Mar 20, 2018
by
anonymous
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to?
Last answer:
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to improve power factor.
capacitor
start
run
motors
function
running
series
auxiliary
winding
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437
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1
answer
asked
Mar 20, 2018
by
anonymous
A rotory converter can also be run as a?
Last answer:
A rotory converter can also be run as a synchronous motor.
rotory
converter
run
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57
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1
answer
asked
Mar 11, 2018
by
anonymous
Which type of heater is cheapest to run?
Which type of heater is cheapest to run?
type
heater
cheapest
run
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56
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0
answers
asked
Mar 21, 2018
by
anonymous
A universal RLC bridge uses?
Last answer:
A universal RLC bridge uses Maxwell Wein bridge for measurement of inductance and modified De Santy's bridge for measurement of capacitance.
universal
rlc
bridge
uses
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228
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1
answer
asked
Mar 20, 2018
by
anonymous
After the starting winding of a single phase induction motor is disconnected from supply, it continues to run only on?
Last answer:
Reason is kinetic energy
single
phase
induction
motor
disconnected
supply
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131
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2
answers
asked
Mar 20, 2018
by
anonymous
A shaded pole motor can be used for?
Last answer:
A shaded pole motor can be used for toys, hair dryers, circulators etc.
shaded
pole
motor
used
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75
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1
answer
asked
Mar 20, 2018
by
anonymous
Direction of rotation of a split phase motor can be reversed by reversing the connection of?
Last answer:
Direction of rotation of a split phase motor can be reversed by reversing the connection of either running winding or starting winding.
direction
rotation
split
phase
motor
reversed
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146
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1
answer
asked
Mar 20, 2018
by
anonymous
In a capacitor start motor, the phase displacement between starting and running winding can be nearly?
Last answer:
In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.
capacitor
start
motor
phase
displacement
between
starting
running
winding
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131
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1
answer
asked
Mar 20, 2018
by
anonymous
A hysteresis motor works on the principle of?
Last answer:
A hysteresis motor works on the principle of hysteresis loss.
hysteresis
motor
works
principle
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74
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1
answer
asked
Mar 20, 2018
by
anonymous
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by...
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last answer:
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
capacitor-start
single
phase
induction
motor
switched
supply
capacitor
inductor
equivalent
reactance
value
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100
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1
answer
asked
Mar 20, 2018
by
anonymous
The running winding of a single phase motor on testing with meggar is found to be ground...
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?
Last answer:
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 at the slot edge where coil enters or comes out of the slot.
running
winding
single
phase
motor
testing
meggar
ground
location
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85
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1
answer
asked
Mar 20, 2018
by
anonymous
Single phase induction motor usually operates on?
Last answer:
Single phase induction motor usually operates on 0.6 power factor lagging.
single
phase
induction
motor
operates
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97
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1
answer
asked
Mar 20, 2018
by
anonymous
The motor used on small lathes is usually?
Last answer:
The motor used on small lathes is usually single-phase capacitor run motor.
motor
used
small
lathes
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127
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1
answer
asked
Mar 15, 2018
by
anonymous
What can cause high amperage on a motor?
What can cause high amperage on a motor?
Last answer:
High amperage can result in a motor when the amount of load increases. when load increases , it reduces the rotor speed which increases the slip at constant synchronous speed ... , as a result more current shall have been drawn to maintain the additional load.
cause
high
amperage
motor
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54
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1
answer
asked
Mar 26, 2018
by
anonymous
The number of poles in a phase induction motor at 50 Hz and running at 1500 rpm will be?
The number of poles in a phase induction motor at 50 Hz and running at 1500 rpm will be?
Last answer:
The number of poles in a phase induction motor at 50 Hz and running at 1500 rpm will be 4.
induction
motor
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65
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1
answer
asked
Mar 20, 2018
by
anonymous
When a D.C. series motor is connected to A.C. supply, the power factor will be low because of?
Last answer:
When a D.C. series motor is connected to A.C. supply, the power factor will be low because of high inductance of field and armature circuits.
dc
series
motor
the
power
factor
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92
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1
answer
asked
Mar 20, 2018
by
anonymous
The wattage rating for a ceiling fan motor will be in the range?
Last answer:
The wattage rating for a ceiling fan motor will be in the range 50 to 150 W .
wattage
rating
ceiling
fan
motor
range
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150
views
1
answer
asked
Mar 20, 2018
by
anonymous
In case of a shaded pole motor the direction of rotation of the motor is?
Last answer:
In case of a shaded pole motor the direction of rotation of the motor is from main pole to shaded pole.
shaded
pole
motor
direction
rotation
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113
views
1
answer
asked
Mar 20, 2018
by
anonymous
In A.C. series motor compensating winding is employed to?
Last answer:
In A.C. series motor compensating winding is employed to reduce sparking at the brushes.
ac
series
motor
compensating
winding
employed
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99
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a two value capacitor motor, the capacitor used for running purposes is?
Last answer:
In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.
two
value
capacitor
motor
used
running
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81
views
1
answer
asked
Mar 20, 2018
by
anonymous
A single-phase induction motor is?
Last answer:
A single-phase induction motor is inherently non-self-starting with low torque.
single-phase
induction
motor
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50
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1
answer
asked
Mar 20, 2018
by
anonymous
The power factor of a single-phase induction motor is usually?
Last answer:
The power factor of a single-phase induction motor is usually lagging.
power
factor
single-phase
induction
motor
usually
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102
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a capacitor start single-phase motor, when capacitor is replaced by a resistance?
Last answer:
In a capacitor start single-phase motor, when capacitor is replaced by a resistance motor will continue to run in same direction.
capacitor
start
single-phase
motor
resistance
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82
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a single phase motor the centrifugal switch?
Last answer:
In a single phase motor the centrifugal switch disconnects auxiliary winding of the motor.
single
phase
motor
centrifugal
switch
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132
views
1
answer
asked
Mar 20, 2018
by
anonymous
The value of starting capacitor of a fractional horse power motor will be?
Last answer:
The value of starting capacitor of a fractional horse power motor will be 300 uF .
value
starting
capacitor
fractional
horse
power
motor
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77
views
1
answer
asked
Mar 20, 2018
by
anonymous
A centrifugal switch is used to disconnect starting winding when motor has?
Last answer:
A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.
centrifugal
switch
used
disconnect
starting
winding
motor
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200
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a shaded pole single-phase motor, the revolving field is produced by the use of?
Last answer:
In a shaded pole single-phase motor, the revolving field is produced by the use of shading coils.
shaded
pole
single-phase
motor
field
use
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86
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a shaded pole motor, the shading coil usually consist of?
Last answer:
In a shaded pole motor, the shading coil usually consist of a single turn of heavy copper wire which is short-circuited and carries only induced current.
shaded
pole
motor
shading
coil
usually
consist
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64
views
1
answer
asked
Mar 20, 2018
by
anonymous
The rotor developed by a single-phase motor at starting is?
Last answer:
The rotor developed by a single-phase motor at starting is zero.
rotor
developed
single-phase
motor
starting
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56
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a split phase motor?
Last answer:
In a split phase motor the starting winding is connected through a centrifugal switch.
split
phase
motor
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49
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1
answer
asked
Mar 20, 2018
by
anonymous
If the capacitor of a single-phase motor is short-circuited?
Last answer:
If the capacitor of a single-phase motor is short-circuited the motor will not start.
capacitor
single-phase
motor
short-circuited
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83
views
1
answer
asked
Mar 20, 2018
by
anonymous
In a split phase motor, the running winding should have?
Last answer:
In a split phase motor, the running winding should have low resistance and high inductance.
split
phase
motor
running
winding
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69
views
1
answer
asked
Mar 20, 2018
by
anonymous
The wattage of motor for driving domestic sewing machine will be around?
Last answer:
The wattage of motor for driving domestic sewing machine will be around 100 to 150 W.
wattage
motor
driving
domestic
sewing
machine
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76
views
1
answer
asked
Mar 20, 2018
by
anonymous
In split-phase motor auxiliary winding is of?
Last answer:
In split-phase motor auxiliary winding is of thin wire placed at the top of the slots.
split-phase
motor
auxiliary
winding
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46
views
1
answer
asked
Mar 20, 2018
by
anonymous
The direction of rotation of an hysteresis motor is determined by?
Last answer:
The direction of rotation of an hysteresis motor is determined by position of shaded pole with respect to main pole.
direction
rotation
hysteresis
motor
determined
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132
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1
answer
...