APE Quiz 2
Quiz
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Other
•
University
•
Hard
S M Sanzad Lumen
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
PWM in voltage source inverter can control ----------------------- of the voltage output ?
Frequency
Magnitude
Both Frequency & Magnitude
None
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which device can be used in a chopper circuit?
GTO
IGBT
MOSFET
ALL
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The controlling parameter in IGBT is the......
IG
VGS
ID
VGE
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following application need frequent starting and stopping of electric motors?
Paper mills
Grinding mills
Air-conditioners
Lifts and hoists
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following machines has heavy fluctuation of load ?
Printing machine
Punching machine
Planer
Lathe
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the percentage slip of a motor at full load speed where the nameplate details are: f= 50Hz, poles = 4, full load speed = 1440 rpm?
s = 3%
s = 4%
s = 5%
s = 6%
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
At what speed a three-phase two-pole synchronous motor rotates when connected to a 50 Hz system?
1000 rpm
1500 rpm
3000 rpm
6000 rpm
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