Interview Questions Answers in Mechanical Engineering, Electrical Engineering

Questions / { prasad surendra naik }

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Answers / { prasad surendra naik }

Question { NTPC, 104856 }

what is the difference between impulse and reaction turbines ?

Answer

in Impulse turbine only kinetic energy is uesd whereas in
reaction turbine both presure energy & kinetic energy is
used

Is This Answer Correct ?

75 Yes

19 No

Question { Kirloskar, 95083 }

what is the difference between stress and pressure?. what
is the difference between moment and torque?

Answer

stress=load/area
pressure=force/area

Is This Answer Correct ?

3 Yes

19 No

Question { IGCAR, 14112 }

from where u will get friction factor 'f' in darcy's formula?

Answer

f gets depend upon the type of bend

Is This Answer Correct ?

3 Yes

6 No

Question { Infosys, 21243 }

what is meant by boiler

Answer

boiler is close vessle in which fluid is heated above
boiling temp. & turned steam by application of external
heat.

Is This Answer Correct ?

0 Yes

1 No

Question { 29544 }

define jig and fixure?what is diference between jig and
fixure?

Answer

jig & fixture are the tools used to fasten the productivity
rate by reducing the time of setting the w/p everytime

jigs-used to hold the w/p & guide the drill bit
fixture-used to hold the w/p ,it does not guide the w/p

Is This Answer Correct ?

38 Yes

5 No

Question { ABB, 17214 }

in which welding process liquid metal is poured?

Answer

Thermit welding

Is This Answer Correct ?

20 Yes

0 No

Question { ITC Infotech, 21455 }

What is the difference between AC Drive and VFD?

Answer

in VFD you can vary the speed according to flow hense power
is consumed acoordingly
in AC drvies the speed of the motor remains constant
whatever the speed you cant vary the speed.

Is This Answer Correct ?

10 Yes

16 No

Question { 13886 }

In Steam Turbine using superheated steam as an inlet steam,
What happens if I use air in place of steam with the same
parameters ? Will is work or not ?

Answer

it will worrk but it will require large space 7 will be
poor efficient

Is This Answer Correct ?

3 Yes

2 No

Question { Alkem Labs, 19568 }

What is the diffrence between four strock and two strock ic
engine

Answer

in four stroke the combustion cycle is completed in four
cycles whereas in two stroke combustion si completed in two
strokes

Is This Answer Correct ?

13 Yes

6 No

Question { NHPC, 11858 }

what is strain

Answer

strain=chnage in lengths/original length

Is This Answer Correct ?

7 Yes

2 No

Question { Infosys, 44375 }

what is hoop stress?

Answer

it is the stress imposed by fluid on all sides of the pipe
when fluid flows inside the pipe

Is This Answer Correct ?

97 Yes

28 No

Question { 5641 }

How to increase the humidity content in an air?

Answer

add a humidifier

Is This Answer Correct ?

6 Yes

1 No

Question { HAL, 18642 }

what happen when diesel is injected in petrol engine

Answer

combustion won't take place as diesel engine is compression
ignition engine

Is This Answer Correct ?

35 Yes

12 No