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HVAC Electrical Basics Practice Quiz 7
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Question 1 of 15
1. Question
1 pointsThe ______ bearing is used where the load is light and the noise must be low
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Question 2 of 15
2. Question
1 pointsIn a three phase system, each phase is separated by:
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Question 3 of 15
3. Question
1 pointsWhich of the following insulation class has highest permissible temperature withstand value:
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Question 4 of 15
4. Question
1 pointsLocked Rotor Current of compressor motors is of the order:
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Question 5 of 15
5. Question
1 pointsWhen more starting torque is needed, a start _____ is added to the motor:
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Question 6 of 15
6. Question
1 pointsWhich of the following are motor starting and stopping devices: (Multiple Answer Question)
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Question 7 of 15
7. Question
1 pointsThe service factor is the reserve capacity of the motor
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Question 8 of 15
8. Question
1 pointsAs the load or torque on a motor increases, the amperage draw required to power the motor will ______:
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Question 9 of 15
9. Question
1 pointsThe _____ is the current drawn by the motor just as it begins to start but before the rotor begins to rotate
Correct
Locked Rotor Amperage (LRA)
Incorrect
Locked Rotor Amperage (LRA)
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Question 10 of 15
10. Question
1 pointsVariable-speed motors operate at _____ efficiencies with varying loads
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Question 11 of 15
11. Question
1 pointsSlip is due to the load imposed on the motor while operating
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Question 12 of 15
12. Question
1 pointsA rule-of-thumb often used by service technicians is that the LRA is normally ______ the rated-load amperage
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Question 13 of 15
13. Question
1 pointsThe heavy dashed lines on the installation diagram represents the line voltage ____ wiring:
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Question 14 of 15
14. Question
1 points_____ device protects the compressor during low outdoor ambient temperature:
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Question 15 of 15
15. Question
1 pointsThe contacts of the start relay are connected in ____ with the _____ wiring:
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Incorrect