ELECTRICAL - Practice Mode

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

Petrol Grease Shellac Kerosene

Correct Answer: Grease

2) 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

Correct Answer: Starting winding open

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

Decreases Increases Equalises Remains same

Correct Answer: Decreases

4) 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

Correct Answer: (R1 + R2) Ohms

5) 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

Correct Answer: Terminal A

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