Gas Heat ESCO Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Gas Heat ESCO Exam. Engage with interactive quizzes and multiple choice questions that will test your knowledge and prepare you for the certification. Ace your exam with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

When a low speed wire on a 120 VAC furnace motor reads 0 ohms, what should a technician conclude?

The motor is working normally
The speed setting is incorrect
The winding is shorted
The wires are disconnected

The correct answer is: The winding is shorted

If the technician were to conclude that A is the correct answer, they would be incorrect. A low speed wire reading 0 ohms in a 120 VAC furnace motor indicates that there is a short circuit in the winding. This means that there is an unintended connection between two points of the circuit, causing the wire to have extremely low resistance. Choosing option B would also be incorrect, as the issue is not with the speed setting but with the internal wiring of the motor. Option D can also be eliminated as the wires are not disconnected, but rather shorted. Therefore, the only correct conclusion that a technician can make is that the winding is shorted and needs to be repaired or replaced.