MCQ Questions Electrical Engineering Regulated DC Power Supply

Regulated DC power supply-

MCQ Questions Electrical Engineering Regulated DC Power Supply

Take a look at these MCQ Questions Electrical Engineering Regulated DC Power Supply 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 Regulated DC Power Supply. 
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 super hero.
 

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 Regulated DC Power Supply - Set - 2

Question 1: 

When load current is zero, the Zener current will be

A. Zero
B. Minimum
C. Maximum
D. None of the above

Correct Answer – (C)

Question 2 : 

As the junction temperature increases, the voltage breakdown point for avalanche mechanism ___________

A. Remains the same
B. Decrease
C. Increases
D. None of the above

Correct Answer – (C)

Question 3 : 

In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance?

A. 10 Ω
B. 50 Ω
C. 25 Ω
D. 40 Ω

Correct Answer – (B)

Question 4 : 

The load voltage is approximately constant when a Zener diode is ___________

A. Forward biased
B. Unbiased
C. Reverse biased
D. Operating in the breakdown region

Correct Answer – (D)

Question 5 : 

An ideal regulated power supply is one which has voltage regulation of ___________

A. 0%
B. 5%
C. 10%
D. 1%

Correct Answer – (A)

MCQ Questions Electrical Engineering Regulated DC Power Supply

Question 6: 

For increasing the voltage rating, zeners are connected in ___________

A. Parallel
B. Series-parallel
C. Series
D. None of the above

Correct Answer – (C)

Question 7: 

As the junction temperature increases, the voltage breakdown point for Zener mechanism ___________

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

Correct Answer – (B)

Question 8: 

A power supply has a voltage regulation of 1%. If the no-load voltage is 20 V, what is the full-load voltage?

A. 8 V
B. 7 V
C. 6 V
D. 2 V

Correct Answer – (A)

Question 9: 

If the input a.c. voltage to regulated or ordinary power supply increases by 5% what will be the approximate change in d.c. output voltage?

A. 10%
B. 20%
C. 15%
D. 5%

Correct Answer – (D)

Question 10: 

Two similar 15 V Zeners are connected in series. What is the regulated output voltage?

A. 15 V
B. 5 V
C. 30 V
D. 45 V

Correct Answer – (C)

MCQ Questions Electrical Engineering Regulated DC Power Supply
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