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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 7
1.

Assertion (A): SUS is a PUT and avalanche diode connected between gate and cathode

Reason (R): SBS has two SUS inbuilt together and connected in anti-parallel

Both A and R are correct and R is correct explanation of A
Both A and R correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a single phase full wave controlled rectifier using centre tap transformer, the voltage across each half of secondary is Vm sin ωt. The peak inverse voltage is
2 Vm
Vm
0.5 Vm
0.25 Vm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Which statement is correct?
BJT and MOSFET are current controlled devices
BJT is voltage controlled and MOSFET is current controlled device
BJT and MOSFET are voltage controlled devices
BJT is current controlled and MOSFET is voltage controlled device
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
In a three phase series inverter, the firing frequency is
three times output frequency
six times output frequency
twice the output frequency
equal to output frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A 3 phase fully controlled converter is a
3 pulse converter
6 pulse converter
2 pulse converter
12 pulse converter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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