Troubleshooting Quizz

Question 1

A circuit is reported “dead.” Technician measures 230 V between live and neutral at supply but no voltage across the load. Most probable cause is?

Accepted Answer

2

Question 2

While measuring current with a multimeter, the display reads zero although the device is operating. The most likely error is:

Accepted Answer

0

Question 3

A fuse repeatedly blows when a motor starts, but motor insulation tests normal. The next thing to check should be:

Accepted Answer

1

Question 4

Technician reads 230 V on both sides of a switch, yet the lamp remains off. Best explanation is:

Accepted Answer

1

Question 5

Which tool would not detect an open circuit when the power is turned off?

Accepted Answer

3

Question 6

In a 3-phase system, current still flows to ground after disconnecting all loads. The most logical next diagnostic step is:

Accepted Answer

1

Question 7

A circuit breaker trips intermittently despite no clear overload. Which condition best explains this behaviour?

Accepted Answer

0

Question 8

Which statement best defines continuity in troubleshooting?

Accepted Answer

2

Question 9

Why is it dangerous to rely only on a test lamp for voltage presence?

Accepted Answer

0

Question 10

If a multimeter shows “OL” (overload) for resistance between two points, which cannot be concluded with certainty?

Accepted Answer

3