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HVAC Electrical Basics Questions Answers 3
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Question 1 of 15
1. Question
1 pointsA centrifugal switch is used to take out the starting winding out of the circuit once the motor reaches ____ of its rated speed:
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Question 2 of 15
2. Question
1 pointsWhich of the following is a self starting motor:
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Question 3 of 15
3. Question
1 pointsAn Induction motor always runs _______ the synchronous speed:
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Question 4 of 15
4. Question
1 pointsOhms law is applicable to which of the following circuits:
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Question 5 of 15
5. Question
1 pointsA 4 pole machine operates at a speed of about:
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Question 6 of 15
6. Question
1 pointsMost of the ac voltmeter and ammeters are calibrated to read in _____ values:
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Question 7 of 15
7. Question
1 pointsCapacitance is the property of the capacitor that opposes any change in the circuit ________:
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Question 8 of 15
8. Question
1 pointsCurrent flowing through the circuit having low power factor will be _______:
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Question 9 of 15
9. Question
1 pointsIn a transformer which of the following quantities remains same between primary and sencondary side:
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Question 10 of 15
10. Question
1 pointsSilicon Controlled Rectifier (SCR) is a ________ layered PNPN device:
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Question 11 of 15
11. Question
1 pointsCapacitance value of a capacitor depends on which of the following:
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Question 12 of 15
12. Question
1 pointsWhich of the following is reduced by using silicon steel material for core of the transformers:
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Question 13 of 15
13. Question
1 pointsDuring _______ of the PN dioide, resistance offered by the diode to the circuit is maximum:
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Question 14 of 15
14. Question
1 pointsIn an Inductor energy is stored in the form of which of the following:
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Question 15 of 15
15. Question
1 pointsIn a three phase motor direction of rotation of the motor can be reversed by changing _____ of the three phases:
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