Interview Questions Answers in Mathematics, Electrical Engineering, General Science, General Aptitude

Question { Wipro, 14625 }

A girl speaks the truth 4 out of 5 times. If she throws a
die and reports it to be a 6, What is the probability of it
being a 6?

Answer

The question is "What is the probability of it
being a 6?" The probability is 1 in 6 regardless of what
the girls says.

Is This Answer Correct ?

3 Yes

15 No

Question { 3302 }

What percentage netural current is in netural depend upon the
phase current

Answer

The answer could be 0 to 100%. It depends on how balanced
the phase currents are.

Is This Answer Correct ?

1 Yes

1 No

Question { 3856 }

what is the 2MVA distribution transformer efficiency

Answer

Transformers come with different efficiency ratings. The
more efficient the more the transformer costs. Check with a
MFG for this information.

Is This Answer Correct ?

1 Yes

4 No

Question { 3163 }

i have to use generator in my project,which gen. i can use?

Answer

You have not provided enough information. What type of
project? The generator size is determined by the KW
required by the project. What is the voltage? 1 phase of 3
phase?

Is This Answer Correct ?

6 Yes

0 No

Question { 8425 }

help me finding the contact no of P Meenakshi Pavan garu
reasoning faculty in Hyderabad

Answer

First find the summary information from the word meenakshi.
Enter that into the search engine and determine the
relative rate of return for this value. Take this value an
perform a partial differential function that meets the
standard reasonable statical proverb. Take this value x
pi x sq rt(3) divided by zero sequence current of a 3 hp
motor running with only 2 phases. The agnostic position
should be your answer.

Is This Answer Correct ?

4 Yes

1 No

Question { 5342 }

power 148kw i need exat cable size in 148 kw in 3phase what
size of cable can i used.

Answer

You do not have enough information to answer the question.
You did not give the voltage or the load power factor.

Is This Answer Correct ?

4 Yes

1 No

Question { 4597 }

2. The heaviest and lightest strings on a certain violin
have linear densities of 3.0 and 0.29 g/m. What is the ratio
of the diameter of the heaviest string to that of the
lightest string, assuming that the strings are of the same
material?

Answer

What does this question have to do with electrical
engineering?

Is This Answer Correct ?

0 Yes

2 No

Question { 5344 }

I am having a DG set.The 415 V from Generator is step up to
460 v and then the same is used for Induction furnace.
before Step up, I am connecting LT load to my factory use.
When Induction furnace is in service from DG, when i try to
start a motor, the generator is tripped.Please tell me the
reason.

Answer

Because the motor starting current and the other loaad is
more that the breaker can handle. You did not list the
motor size of the breaker size.

Is This Answer Correct ?

3 Yes

0 No

Question { 9293 }

why single induction motor is not self starter?

Answer

You could have gone to Google and found this for yourself.

"Single phase induction motor can't produce continuously
rotating magnetic field in the air gap, as either N or S
pole would be present at a time. Single pole is not
sufficient to drive the rotor from one end. So a capacitor
is employed to shift the phase."

Is This Answer Correct ?

3 Yes

0 No

Question { 8866 }

for 644KW load which MCCB should i use

Answer

You have not given the required information to answer your
question. Voltage? power Factor? Type Load? Fault current?

Is This Answer Correct ?

6 Yes

2 No

Question { 6056 }

how to calculate energy meter multipling factor by ct & pt
raitio

Answer

If you have a 200/5 ct = 40/1 and a pt = 480/120 or 4/1
then you just multiply 40 x 4 = 160 x your KWH reading
and/or your demand reading.

Is This Answer Correct ?

7 Yes

3 No

Question { IBM, 30087 }

In a Class 52% students has passed in Mathematics, 40%
students has passed in Physics, 17% students has passed in
both the subjects. So, how many percentage of students
hasn't passed in both the subjects?

Answer

If 17% of the students passed both tests, then 83% did not
pass both tests.
100% - 17% = 83%

Is This Answer Correct ?

13 Yes

13 No

Question { IBM, 30087 }

Answer

#6 answer the question. No need to make up your own example.
Read #2. It is correct.

Is This Answer Correct ?

1 Yes

1 No

Question { IBM, 30087 }

Answer

The question says quote" 17% students has passed in both
the subjects" #3 how can you say 57% passed. Read the
question.

Is This Answer Correct ?

2 Yes

5 No

Question { IBM, 30087 }

Answer

17% students has passed in both the subjects. The 52% and
40% have nothing to do with the answer.

So, how many percentage of students
hasn't passed in both the subjects?

If 17% passed both subjects then 100 - 17 = 83% did not pass
both subjects.

Is This Answer Correct ?

2 Yes

4 No

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