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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 4
46.
A current source inverter has simple commutation circuit.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In load commutated chopper, the commutating element
is capacitor
is capacitor and inductor
is capacitor, inductor and auxiliary thyristor
any of the above depending on load
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
In a half bridge inverter each thyristor is gated at a frequency f. The output frequency is
2 f
f
0.5 f
0.25 f
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.

Assertion (A): A transistor has lower voltage drop during conduction as compared to thyristor

Reason (R): Transistors are manufactured in very high voltage and current ratings.

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.
50.

Assertion (A): Typical value of thermal resistance from source to sink of an SCR is about 0.3° C/W

Reason (R): Heat sinks of thyristors are generally made of aluminium.

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.
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