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Scr Silicon Controlled Rectifiers Mcqs, this topic has 25 mcqs, It takes five to ten minutes to complete this free scr silicon controlled rectifiers mcqs test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "scr silicon controlled rectifiers mcqs" MCQs and share with your friends, brothers, sisters.
scr silicon controlled rectifiers mcqs (Total Quiz: 25)
MCQ: When SCR starts conducting, then _____________ loses all control?
- Gate
- Cathode
- Anode
- None of the above
A
MCQ: An SCR can exercise control over____________of a.c. supply?
- Positive half-cycles only
- Negative half-cycles only
- Both positive and negative half-cycles
- Positive or negative half-cycles
D
MCQ: If firing angle in an SCR circuit is increased, the output _____________?
- Remains the same
- Is increased
- Is decreased
- None of the above
C
MCQ: We can control a.c. power in a load by connecting ______________?
- Two SCRs in series
- Two SCRs in parallel
- Two SCRs in parallel opposition
- None of the above
C
MCQ: When SCR is OFF, the current in the circuit is ________________?
- Exactly zero
- Small leakage current
- Large leakage current
- None of the above
B
MCQ: In an SCR circuit, the angle of conduction can be changed by__________________?
- Changing anode voltage
- Changing gate voltage
- Reverse biasing the gate
- None of the above
B
MCQ: If gate current is increased, then anode-cathode voltage at which SCR closes_________________?
- Is decreased
- Is increased
- Remains the same
- None of the above
A
MCQ: An SCR is turned off when ________________?
- Anode current is reduced to zero
- Gate voltage is reduced to zero
- Gate is reverse biased
- None of the above
A
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