37.

38.

39.

40.

41.

42.

43.

44.

059/20

A 100 V/20 ५, 100 VA transformer is converted to 100 V/110 V auto transformer the

rating of the auto transformer is
A) 100 VA
C) 500 VA

8) ۵۶۸
D) 550 VA

If the mechanical load of a three-phase induction motor is increased from no load to

full load, the input power factor of the motor
A) Remain same
C) Increase

In which 0
A) Low slip region
C) Both A) and B)

the following region, induction m

Grading of cables is done to achieve
A) To reduce quality of insulation

C) Improve efficiency

What is the Address (SFR) for TCON, SCO!

will
B) Decrease
D) Becomes unity

otor operation is stable ?
B) High slip region
D) None of the above

B) Uniform stress
D) All of the above

N, SBUF, PCON and PSW

respectively ?

A) 88H, 98H, 99H, 87H, ODOH 8) 98H, 99H, 87H, 88H, 00011
C) ODOH, 87H, 88H, 99H, 98H D) 87H, 88H, ODOH, 98H, 99H
A thyrite type lightning arrestor

A) Blocks the surge voltage appearing in a line

B) Absorbs the surge voltage appearing in a line

C) Offers a low resistance path to the surge

D) Returns the surge back to the source

Which of the following types of heating wil
removing the outer shells ?

A) Direct resistance heating

C) Dielectric heating

Damping used in moving iron instruments is

A) Air friction
C) Fluid friction

be preferred for cooking food without

B) Indirect heating
D) Electric arc heating

B) Eddy current
D) None of these