An n pulse rectifier is fed by a source having an inductance L. If load current

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Question
An n pulse rectifier is fed by a source having an inductance L. If load current is I₀, the voltage drop due to overlap is
Options
A.
B.
C.
D.

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3. 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.
Options
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

5. In integral cycle control of ac regulators, the period of integral cycle control, i.e., (m + n) T should be
Options
A. less than mechanical or thermal time constant of the system
B. more than the mechanical or thermal time constant of the system
C. more or less than the mechanical or thermal time constant
D. very high

9. A separately excited dc motor is run from a dc source through a chopper. At 600 rpm and rated torque, the duty cycle of chopper is 0.8. At 600 rpm and half the rated torque, the duty cycle is likely to be
Options
A. 0.9
B. 0.8
C. 0.75
D. 0.6

10. In a 3 phase full converter, the firing angle is less than 60�. The instantaneous output voltage
Options
A. will have positive part only
B. will have both positive and negative parts
C. may have both positive and negative parts
D. will have negative part if load is inductive

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