Question 160Electricity & Electronics - Assistant Engineer

70% to pass

In testing a hand cranked megger prior to use, what statement is true?

AWith the test leads shorted or open, the pointer should go to zero ohms.

BWith the test leads shorted or open, the pointer should go to infinite ohms.

CWith the test leads shorted, the pointer should go to zero ohms, and with the tests leads open, the pointer should go to infinite ohms.

DWith the test leads shorted, the pointer should go to infinite ohms, and with the tests leads open, the pointer should go to zero ohms.

AI Explanation

The correct answer is C) With the test leads shorted, the pointer should go to zero ohms, and with the tests leads open, the pointer should go to infinite ohms. This is because a hand-cranked megger is designed to measure the resistance of an insulation circuit. With the test leads shorted, the megger should read zero ohms, indicating no resistance. With the test leads open, the megger should read infinite ohms, indicating an open circuit with maximum resistance. The other options are incorrect because they do not accurately describe the expected behavior of a properly functioning hand-cranked megger during this test.

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