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 - 5

Question 1:

When SCR starts conducting, then ……………. loses all control

Gate
Cathode
Anode
None of the above

Check Answer

Correct Answer – (A)

Question 2 :

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

Check Answer

Correct Answer – (D)

Question 3 :

If gate current is increased, then anode-cathode voltage at which SCR closes …………….

Is decreased
Is increased
Remains the same
None of the above

Check Answer

Correct Answer – (A)

Question 4 :

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

Check Answer

Correct Answer – (B)

Question 5 :

An SCR is made of silicon and not germanium because silicon ………

Is inexpensive
Is mechanically strong
Has small leakage current
Is tetravalent

Check Answer

Correct Answer – (C)

MCQ Questions Electrical Engineering Silicon Controlled Rectifiers

Question 6:

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

Check Answer

Correct Answer – (C)

Question 7:

When SCR is OFF, the current in the circuit is …………….

Exactly zero
Small leakage current
Large leakage current
None of the above

Check Answer

Correct Answer – (B)

Question 8:

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

Remains the same
Is increased
Is decreased
None of the above

Check Answer

Correct Answer – (C)

Question 9:

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

Check Answer

Correct Answer – (A)

Question 10:

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

Zero
10 V
1 V
1 V

Check Answer

Correct Answer – (D)

MCQ Questions Electrical Engineering Silicon Controlled Rectifiers

NCERT Solutions & Download NCERT Textbooks

MCQ Questions Electrical Engineering Power Electronics

Multiple Choice Questions for Competitive Exams

MCQ Questions Class 11 Chemistry Environmental Chemistry with Answers

Set -1 Set -2 Set -3 Set -4 Set -5
MCQ Questions Class 11 Chemistry Hydrocarbons with Answers

Set -1 Set -2 Set -3 Set -4 Set -5
MCQ Questions Class 11 Chemistry Organic Chemistry with Answers

Set -1 Set -2 Set -3 Set -4 Set -5
MCQ Questions Class 11 Chemistry The p Block Elements with Answers

Set -1 Set -2 Set -3 Set -4 Set -5
MCQ Questions Class 11 Chemistry The s Block Elements with Answers

Set -1 Set -2 Set -3 Set -4 Set -5
MCQ Questions Class 11 Chemistry Hydrogen with Answers

Set -1 Set -2 Set -3 Set -4 Set -5