MCQ Questions Electrical Engineering Silicon Controlled Rectifiers

Take a look at these MCQ Questions Electrical Engineering Silicon Controlled Rectifiers for engineering interview questions and our tips on how to answer them. If you’re applying for an engineering internship, graduate scheme or entry-level job, you’ll face at least one interview as part of an engineering employer’s recruitment process. You may be interviewed by one or more members of the HR team, senior members of the engineering team you’d be joining or a mixture of both. In this section we will study MCQ Questions Electrical Engineering Silicon Controlled Rectifiers.

As well as questions about your reasons for applying to the role and the employer in question, engineering recruiters will be assessing your potential in the areas that is crucial to any engineering role: technical expertise. Engineers may be asked to perform feats of fantastic technical prowess, but it will be as as part of a Justice League rather than as a solo engineering superhero.

The interviewer is almost as nervous as the candidate in most interviews. You might wonder if you look confident enough, if you will hire the right person, or if you are asking the right engineering interview questions. The last question is arguably the most crucial part to worry about when you’re interviewing candidates.

MCQ Questions Electrical Engineering Silicon Controlled Rectifiers - Set - 2

Question 1:

An SCR is turned off when ___________

A. Anode current is reduced to zero
B. Gate voltage is reduced to zero
C. Gate is reverse biased
D. None of the above

Check Answer

Correct Answer – (A)

Question 2 :

We can control a.c. power in a load by connecting ___________

A. Two SCRs in series
B. Two SCRs in parallel
C. Two SCRs in parallel opposition
D. None of the above

Check Answer

Correct Answer – (C)

Question 3 :

An SCR has three terminals viz ___________

A. Cathode, anode, gate
B. Anode, cathode, grid
C. Anode, cathode, drain
D. None of the above

Check Answer

Correct Answer – (A)

Question 4 :

When an SCR is turned on, the voltage across it is about ___________

A. Zero
B. 10 V
C. 1.5 V
D. 1 V

Check Answer

Correct Answer – (D)

Question 5 :

An SCR is turned off by ___________
A. Reducing anode voltage to zero
B. Reducing gate voltage to zero
C. Reverse biasing the gate
D. None of the above

Check Answer

Correct Answer – (A)

MCQ Questions Electrical Engineering Silicon Controlled Rectifiers

Question 6:

In an SCR circuit the supply voltage is generally ___________ that of breakover voltage

A. Equal to
B. Less than
C. Greater than
D. None of the above

Check Answer

Correct Answer – (B)

Question 7:

An SCR is made of silicon and not germanium because silicon

A. Is inexpensive
B. Is mechanically strong
C. Has small leakage current
D. Is tetravalent

Check Answer

Correct Answer – (C)

Question 8:

The control element of an SCR is ___________

A. Cathode
B. Anode
C. Anode supply
D. Gate

Check Answer

Correct Answer – (D)

Question 9:

If firing angle in an SCR circuit is increased, the output ___________

A. Remains the same
B. Is increased
C. Is decreased
D. None of the above

Check Answer

Correct Answer – (C)

Question 10:

The normal way to turn on a SCR is by ___________
A. Appropriate anode current
B. Appropriate gate current
C. None of the above
D. Both A & B

Check Answer

Correct Answer – (C)

MCQ Questions Electrical Engineering Silicon Controlled Rectifiers

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