
EE8552_POWER ELECTRONICS UNIT 1_PART 2

Quiz
•
Other
•
University
•
Hard
Elavarasu Ramalingam
Used 9+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
RC snubber circuit is used to limit the rate of
Rise of current in SCR
Rise of voltage across SCR
Conduction period
All of the above
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The thyristor is turned -off when the anode current falls below_____
Forward current
Latching current
Holding current
Breakover current
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a thyristor circuit, the angle of conduction is changed by changing______
Anode voltage
Gate current
Forward current
Anode current
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In AC voltage regulator, TRIACS cannot be used for a
Back emf load
Resistive load
R-L Load
Inductive load
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a thyristor
The holding current is greater than latching current
The two current are equal
The latching current is greater the holding current
None of the above
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a thyristor the ratio of latching current to holding current is
0.5
1
2.7
5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a thyristor, dv/dt protection is achieved through the use of
L across thyristor
RC across thyristor
R across thyristor
RL across thyristor
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