# HVAC Electrical Basics Practice Test 1: Nate

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1. Fuse is used in a circuit for which of the following protection:
A:Over current protection
B:Both the options are correct
C:Short circuit protection
C:Short circuit protection
2. All electrical installations must meet the _______:
A:NEC
B:ASHRAE
C:OSHA
D:NFPA
A:NEC
3. Capacitors used in motors will be rated in _______:
4. Rate of change of charge is defined as:
A:Voltage
B:Resistance
C:Current
D:Capacitance
C:Current
5. The current carrying capacity of a wire depends on the:
A: Insulation thickness
B:Size of conductor cross section
C:Both the options are correct
B:Size of conductor cross section
6. Magnetic lines of force flow between _______ of a magnet
A:West pole and South pole
B:East pole and West pole
C:North pole and South pole
D:North pole and East pole
C:North pole and South pole
7. In which of the following energy is stored in the form of magnetic filed:
A:Impedance
B:Capacitor
C:Inductor
D:Resistance
C:Inductor
8. A 4 pole motor runs at ______ rpm:
A:900
B:1800
C:3600
D:2400
C:3600
9. The starting winding of an AC single phase motor is _______ out of phase with the run winding:
A:180 degrees
B:45 degrees
C:120 degrees
D:90 degrees
B:45 degrees
10. The Locked Rotor Current (LRC) of a single phase motor is about _______ of full load current of the motor:
A:5 to 7 times
B:2 to 3 times
C:8 to 10 times
D:10 to 12 times
A:5 to 7 times
11. Power factor in a normal electrical circuit be ______:
B:Unity
C:Lagging
C:Lagging
12. In a series current which of the following quantity remains same:
A:Current
B:Power
C:Voltage
D:Resistance
A:Current
13. Wattmeter is used to measure which of the following:
A:Power
B:Resistance
C:Current
D:Voltage
A:Power
14. Resistance is measured in which of the following:
A:amps
B:ohms
C:Henry