MCQ Questions Electrical Engineering Earthing or Grounding

Take a look at these MCQ Questions Electrical Engineering Earthing or Grounding 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 Earthing or Grounding.

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 Earthing or Grounding - Set - 2

Question 1:

Minimum distance of underground cable from the foundation of a building should be

100 cm
50 cm
10 cm
5 cm

Check Answer

Correct Answer – (C)

Question 2 :

From the point of view of safety, the resistance of the earthing electrode should be

Low
High
Medium
The value of resistance of earth does not affect the safety

Check Answer

Correct Answer – (A)

Question 3 :

When the 3-phase system is not grounded and if Single Line to Ground fault occurs, the voltage of the other two healthy phases will
a) Increases
b) Decreases
c) Remains unaffected

d) None of Them

Check Answer

Correct Answer – (A)

Question 4 :

Moisture content in the soil __ the earth soil resistance
a) increase
b) decrease
c) does not affect
d) none of the above

Check Answer

Correct Answer – (B)

Question 5 :

When earth fault occurs
a) voltage potential at the earth mat increases due to grounding
b) voltage potential at the earth mat decreases due to grounding
c) voltage potential at the earth mat remains zero irrespective of fault
d) none of the above

Check Answer

Correct Answer – (A)

MCQ Questions Electrical Engineering Earthing or Grounding

Question 6:

Materials used in plate earthing are

Wood coal
Salt, earthing plate
(a) and (b) both
None of the above

Check Answer

Correct Answer – (C)

Question 7:

For proper earthing, what should be the maximum value of earth resistance while carrying out the testing of earth continuity path?

1 Ω
2 Ω
5 Ω
10 Ω

Check Answer

Correct Answer – (C)

Question 8:

Factors on which soil resistance depends
a) depth of the electrode
b) moisture
c) Nacl
d) all the above

Check Answer

Correct Answer – (A)

Question 9:

The objective of earthing or grounding is
a) to provide as low resistance possible to the ground
b) to provide as high resistance possible to the ground
c) to provide flow of positive, negative and zero sequence currents
d) none of the above

Check Answer

Correct Answer – (A)

Question 10:

For an EHV equipment for maintenance first it should be isolated and connected to ground because
a) to provide low impedance
b) to discharge the charging capacitance to ground
c) protection for operating personnel
d) both (b) and (c)

Check Answer

Correct Answer – (D)

MCQ Questions Electrical Engineering Earthing or Grounding

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