1. Refer to Figure 3-28 below.

Technician A says that the compressor clutch diode in the clutch electrical circuit is in series with the compressor clutch coil.

Technician B says that a blown HVAC 20 A fuse in the IP fuse block will prevent blower motor operation in all speeds except high.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

2. A test lamp has been connected from the blower motor ground to the "hot" side of the fuse or circuit breaker:

Technician A says that if the lamp does not light, a defective ground wire is indicated.

Technician B says that if the lamp lights, a defective blower motor is indicated.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

3. Technician A says when testing a circuit or component the voltmeter is connected in parallel with the circuit.

Technician B says a DMM has a low impedance or input resistance, which allows the meter to draw current when connected to a circuit.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

4. Technician A says a voltage drop is the amount of electrical energy that is converted to another form of energy.

Technician B says a voltage drop test is the preferred method of testing for unwanted resistance in a circuit when the circuit is under a load (turned on)

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

5. Technician A says if a wire or wiring in a circuit has higher than designed resistance, the wire will drop some of the available voltage.

Technician B says unwanted resistance will cause current flow to go up in a circuit and the circuit protective fuse will fail.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

6. Technician A says in order to test the resistance of a component with a DMM, the circuit or component must be open and isolated so that voltage cannot flow.

Technician B says that the term "continuity" means that current can flow in the circuit and that there was no problem found.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

7. Technician A says when testing for amperage flow in a circuit the DMM leads must then be placed in parallel with the circuit.

Technician B says that the easiest way to test for amperage flow in a circuit is to use an inductive pickup.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

8. Technician A says a fuse is a replaceable component with an element that will melt should the current passing through it exceed its rated value.

Technician B says a fuse is commonly used on a component that may experience a temporary high current surge such as an air-conditioning compressor electromagnetic clutch.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

9. Technician A says a circuit has an open when there is a complete path for current to flow.

Technician B says that an open circuit will not cause a circuit protection device such as a fuse to fail.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B

10. Technician A says a fuse should only be replaced with the same ampere rating as the original designed for the circuit.

Technician B says circuit breakers can be replaced with one of a slightly lower ampere rating if the original size designed for the circuit is not available.

Who is correct?

A. A only

B. B only

C. Both A and B

D. Neither A nor B