HVAC Electrical Basics Practice Test 1: Nate

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Author:
salvatorefricano
ID:
304993
Filename:
HVAC Electrical Basics Practice Test 1: Nate
Updated:
2015-07-08 23:37:36
Tags:
electrical
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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 _______: 
    A:farads 
    B:millifarads 
    C:nanofarads 
    D:microfarads
    D:microfarads
  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 ______: 
    A:Leading 
    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 
    D:Farad
    B:ohms
  15. In a three phase supply system, each phase is _______ with each other: 
    A:180 degrees 
    B:45 degrees 
    C:90 degrees 
    D:120 degrees
    D:120 degrees

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