Electrical MCQ with Answers

Electrical MCQ with Answers

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

Answer is:

Grease

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

Answer is:

Starting winding open

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

Answer is:

Decreases

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

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?

Answer is:

Terminal A