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21

Electrical MCQ with Answers

21) Which material is used to avoid oxidation between aluminium conductor and the terminal?

Petrol

Grease

Shellac

Kerosene

Answer is:

Grease

Electrical MCQ with Answers

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Related Electrical MCQ with Answers

22) What is the condition of compressor motor if Ohm meter reads infinity across common and start terminals?

Running winding open

Starting winding open

Starting winding shorted

Running winding shorted

Answer is:

Starting winding open

23) What is the effect of pouring water on electrodes resistance in earth pit?

Decreases

Increases

Equalises

Remains same

Answer is:

Decreases

24) What is the total resistance if two resistors R1 and R2 are connected in series?

(R1 - R2) Ohms

(R1 + R2) Ohms

(R1 x R2) Ohms

(R1 / R2) Ohms

Answer is:

(R1 + R2) Ohms

25) Which is the common terminal while Ohm meter reads AB = 10 Ohm, AC = 15 Ohm and BC = 25 Ohm if the motor terminals are A, B and C?

Terminal A

Terminal B

Terminal C

Earth Terminal

Answer is:

Terminal A

Electrical MCQ with Answers

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