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Term
Which of the following is equal to 2.1KW?
1 of 110
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2,100 Kilowatts
21,000 Watts
210 Watts
2,100 Watts
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HVAC Excellence - ELECTRICITY Exam LATEST QUESTIONS AND CORRECT ANSWERS.pdf, Exams of Electrical and Electronics Engineering
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Your time: 1 min
0%^ Correct Incorrect 1100
Your answers
Term
Which of the following is equal to 2.1KW?
1 of 110
Give this one a try later! 2,100 Kilowatts 21,000 Watts 210 Watts 2,100 Watts Don't know?
Term
Circuit breakers & fuses are primarily used to provide;
2 of 110
Term
In the schematic, what voltage would be found across the condenserfan motor?
3 of 110
Give this one a try later! enhance the efficiency of the circuit. control the flow of current. regulate the voltage level.^ protection from an overload ofcurrent. Don't know?
Give this one a try later! O volts, 0 volts 24 Volts 240 volts.
Term
The synchronous speed of a four pole, 60 Hz single phase motor is;
6 of 110
Term
When the temperature of a negative temperature coefficient (NTC)thermistor increases, its resistance will.
7 of 110
C A
Don't know?
Give this one a try later! 1800 rpm. 1200 rpm. 900 rpm. 3600 rpm. Don't know?
Give this one a try later!
Term
When resistors are wired in parallel;
8 of 110
Term^ 9 of 110
decrease. remain unchanged. remain constant increase Don't know?
Give this one a try later! the current through each resistor willbe the same as the applied source the current will split equally acrosseach resistor the voltage drop across eachresistor will be the same as the applied source the voltage drop across each resistorwill vary with the applied source Don't know?
Term
Which of the following is an acceptable temporary replacement for arun capacitor rated at 35MFD @ 440VAC
Term
Two 120 volt incandescent light bulbs are wired in series, one is a 60watt bulb, the other is a 4 watt bulb. The result would be
12 of 110
Give this one a try later! 37.5MFD @ 440VAC. 40mfd @ 300vac. 30mfd @ 440vac. 35mfd @ 220vac. Don't know?
Give this one a try later! both bulbs light neither bulb will light only the 60 watt bulb will light only the 4 watt bulb will light Don't know?
Definition
electronic controls use for equipment operation and monitoring
13 of 110
Term
Which of the following motors is most energy efficient.
14 of 110
Give this one a try later! A step up transformer increases; Excessive current can be caused by; Divided Voltage can be calculatedby; Direct Digital Control (DDC) is Don't know?
Give this one a try later! ЕСM OHMMETER. C SILICON
Term
Which of the following in not a factor in determining impedance in anAC circuit?
17 of 110
Term
A transducer can create a signal based on.
18 of 110
the hot conductor. the blower motor. the ground conductor. the neutral conductor. Don't know?
Give this one a try later! Power Intensity Viscosity Frequency Don't know?
Give this one a try later!
Term
What is the term used to describe the output side of a transformer?
19 of 110
Term
When testing the windings of a single phase motor,
20 of 110
temperature. light. pressure. heat. Don't know?
Give this one a try later! Secondary side. High inductive side. Primary side. Line starter. Don't know?
Which of the following is the correct formula for determining wattagein an electrical circuit?
Term
If contacts become badly pitted, it is acceptable to.
23 of 110
24 of 110
Give this one a try later! ЕСM 0.10 amperes silicon W = E times I Don't know?
Give this one a try later! clean the contacts with sandpaper lubricate the contacts with oil replace the contacts or control tighten the screws on the contacts Don't know?
Term
Utility companies usually supply residential homes with ______________service.
Term
The voltage to ground of a "high Leg" or "Stinger Leg" on a three phaseopen Delta system will be approximately;
25 of 110
Give this one a try later! 120v, three phase, four wire 120v, single phase, two wire 240v, three phase, three wire 240V, single phase, three wire Don't know?
Give this one a try later! 150 240 120 208 Don't know?
Term
In the schematic, what voltage would be found from terminal Y to theinput side of the coil on line #11?
28 of 110
Term
The capacitor start-capacitor run (CSCR) motor provides;
29 of 110
Give this one a try later! 5 volts 120 volts. 12 volts 0 volts. Don't know?
Give this one a try later! moderate starting and runningtorque. high starting and runningtorque. variable starting and running torque. low starting and running torque.
Term
Which of the following is generally considered to be within themaximum allowable (plus or minus) supply voltage variation?
30 of 110
Term
Resistance can be calculated by:
31 of 110
Don't know?
Give this one a try later! 5% W = E times I Ohmmeter silicon Don't know?
Give this one a try later! Number of stator Poles. E squared times W.
Term
With a motor running at full load, voltmeter leads are placed on L1 andT1 terminals of the contactor. The voltmeter indicates no measurable
voltage. This is an indication of.
34 of 110
Term^ 35 of 110
The transfer of energy through thecircuit. The flow of electrons in thecircuit. The flow of ions in the circuit. The movement of protons in thecircuit. Don't know?
Give this one a try later! good clean contacts. a faulty blower motor or blower relay. electromagnetism. no voltage to the motor. Don't know?
In the schematic, with the thermostat bulb closed and the fan switch inthe AUTO position, what voltage would be found from Terminal R to
Terminal G on the Thermostat?
Term
Transformers are rated according to;
36 of 110
37 of 110
Give this one a try later! 0 Volts 24 Volts 5 Volts 12 Volts Don't know?
Give this one a try later! Ohms at the primary Bohms at the primary. Va at the primary. VA at the secondary. Don't know?