INDUSTRIAL DRIVES (Unit-1)_Introduction to Electric Drives
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
To control the speed of motor, electric __________ is used.
drive
converter
starter
traction
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Chopper is used in electric drive as
sensing unit
power source
modulator
none
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Maintance of DC motor is ___________ than AC motor.
more
less
equal
none
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
V/F speed control method is used in __________ drives.
DC
AC
both A and B
none
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
VFD use only ___________ type of motor.
AC
DC
both A and B
none
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Power modulator in electric drive is
inverter
chopper
rectifier
all the above
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In four quadrant DC diagram, 1st quadrant shows
forward motoring
reverse motoring
forward braking
reverse braking
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