Question

1. the ______ motor has its windings designed in pairs so that they can be connected in either series or parallel.

a. direct current
b. alternating current
c. double ganged
d. dual voltage

1. the term ______ means to make more than one phase out of a single-phase circuit.

a. delta-wye
b. dc-ac
c. replicator-voltage
d. split-phase

1. ______ means that there is a force that opposes the current flowing through the coil.

a. splitting phases
b. capacitor phase splitting
c. inductive reactance
d. shading the pole

1. the capacitor start, capacitor run motor uses a ______ in both the start winding and the run winding.

a. variac
b. potentiometer
c. capacitor
d. rheostat

1. in a capacitor start, capacitor run motor, a ______ switch is used to disconnect the start winding from the power source.

a. centrifugal
b. clutch
c. centripetal
d. capacitive

1. the induction motor known as the ______ motor uses a commutator and brushes in addition to a standard rotor.

a. single-phase
b. repulsion-induction
c. shaded-pole
d. stepping

1. a motor that rotates only in small increments when the power is pulsed to it is called a ______ motor.

a. switched
b. stepping
c. pulsing
d. jump

1. true or false? synchro units can be used to monitor the change in position of ship rudders, weather vanes, and gun turrets.
2. two types of motor protection required in a dedicated line are ______ protection and run protection.

a. loop connected
b. line
c. branch circuit
d. magnetic

1. branch circuit protection ranges from 150% to ______% of the motors full-load current.

a. 200
b. 225
c. 235
d. 500

1. true or false?

Explanation:

1. Dual voltage motors have windings paired for series/parallel connection to adapt to different voltages.
2. Split-phase is the method of creating multiple phases from a single-phase circuit.
3. Inductive reactance is the force opposing current in an inductive coil.
4. Capacitor start, capacitor run motors use capacitors in both start and run windings for improved performance.
5. A centrifugal switch disconnects the start winding once the motor reaches operating speed.
6. Repulsion-induction motors combine features of repulsion motors (commutator, brushes) and induction motors (standard rotor).
7. Stepping motors rotate in small, discrete increments when pulsed with power.
8. Synchro units are used for position monitoring in applications like ship rudders, weather vanes, and gun turrets.
9. Dedicated motor lines require magnetic (overload) protection and run protection.
10. Branch circuit protection for motors is specified to range from 150% to 250% of full-load current, with 225% being the standard upper limit for most motors in this range.

Answer:

1. D. dual voltage
2. D. split-phase
3. C. Inductive reactance
4. C. capacitor
5. A. centrifugal
6. B. repulsion-induction
7. B. stepping
8. True
9. D. magnetic
10. B. 225