IDA201UNIT 17 REVIEW (CRF)-Mr. Graham

The two popular operating voltages for residence are ____________ and ____________ volts.

• 115v and 230v

• 110v and 220v

• 220v and 240v

• 100v and 200v

When an open motor gets up to speed, the ____________ switch takes the start winding out of the circuit.

• Centrifugal or electronic

• Manual

• Thermal

• Pressure

Is the resistance in the start winding greater or less than the resistance in the run winding?

• Greater

• Less than

Which of the following devices may be wired into the starting circuit of a motor to improve the starting torque?

• Another winding

• A start capacitor

• A thermostat

• A winding thermostat

Which of the following devices may be wired into the running circuit of a motor to improve the running efficiency?

• A start capacitor

• A run capacitor

• Both a start and run capacitor

• None of the above

BEMF is defined as:

• Back Electromotive Force

• Basic Electromagnetic Field

• Balanced Energy Magnetic Field

• Binary Electromotive Function

The hermetic compressor motor is manufactured from special materials because:

• It needs to withstand high temperatures.

• It requires a lightweight design.

• It must be cost-effective.

• It should be easy to manufacture.

The two types of motors used for hermetic compressors are ____________ and ____________.

• Split-phase and permanent split capacitor

• Induction and synchronous

• Brushless DC and stepper

• Universal and shaded pole

How does power pass through the compressor shell to the motor inside?

• Through a direct mechanical linkage

• Via an electrical connection

• Using a hydraulic system

• By a pneumatic mechanism

The two types of relays used to start hermetic compressors are the ____________ relay and ____________.

• Current and potential

• Thermal and magnetic

• Voltage and current

• Inductive and capacitive