Electronics and Communication Engineering - Power Electronics

41. 

Lead mounting for SCR is used for

A. rating less than mA
B. rating about 1 A or less
C. rating of 20 A or less than 20 A
D. rating 100 A or less

Answer: Option B

Explanation:

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42. 

A load commutated chopper circuit has

A. one thyristor
B. two thyristors
C. four thyristors
D. six thyristors

Answer: Option C

Explanation:

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43. 

Assertion (A): The output voltage of an inverter can be controlled by PWM technique

Reason (R): In a current source inverter the input current is constant.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

Answer: Option B

Explanation:

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44. 

A TRIAC is equivalent to

A. two thyristors in series
B. two thyristors in parallel
C. one thyristor and one diode
D. one thyristor and one transistor

Answer: Option B

Explanation:

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45. 

Which of the following commutation methods is the overall circuit under damped?

A. Class A
B. Class B
C. Class C
D. Both class A and Class B

Answer: Option D

Explanation:

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