HVAC Excellence - ELECTRICITY Exam
A ___________ is typically used on a single section capacitor start fractional horse strength
compressor motor to disconnect the start winding after the motor starts offevolved. -
ANS-current relay
A 240 Volt, three twine circuit may be break up into 120 Volt circuits. - ANS-TRUE
A capacitor analyzer is designed to read; - ANS-the capacitive resistance of a capacitor.
A device with overload safety used to govern a motor is a; - ANS-line starter.
A diode is used to; - ANS-manage the route of electron flow.
A parallel circuit includes three resistors.R1 = 30 Ohms, R2 = 15 Ohms, R3 = 10 Ohms. If the
contemporary via R2 is 4 Amps (I = 4 Amps), what is the source Voltage? - ANS-60 volts
A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance equals; - ANS-6
ohms.
A solenoid valve coil operates on the precept of - ANS-electromagnetism.
A step up transformer increases; - ANS-voltage.
A 3 segment load calls for at the very least; - ANS-three supply traces.
A transducer can create a signal based totally on. - ANS-pressure.
A transformer has one thousand turns of cord within the primary coil and 2000 turns in the
secondary coil. If a hundred and twenty volts are implemented, the output voltage can be; -
ANS-240 volts
A transformer has a thousand turns of wire in the number one coil and 500 turns inside the
secondary coil. If a hundred and twenty volts are implemented, the output voltage might be. -
ANS-60 volts
A regular thermocouple used on a fuel furnace can. - ANS-generate a small DC electric modern.
An electron has; - ANS-a bad rate.
An electronically commutated motor (ECM) is designed to; - ANS-provide right air go with the
flow below various situations.
, An ohmmeter should in no way be linked to; - ANS-a live circuit or a charged capacitor till it has
been discharged
Any material so one can conveniently release electrons is known as; - ANS-A conductor
Capacitors are always connected _____________ to the start winding. - ANS-in collection
Capacitors are rated in - ANS-Microfarads & Volts.
Circuit breakers & fuses are ordinarily used to offer; - ANS-safety from an overload of current.
Circuit fuses and breakers are ordinarily used to guard - ANS-masses
Contactors are rated according to the most amperage through the; - ANS-contacts.
Current waft is: - ANS-The glide of electrons within the circuit.
Direct Digital Control (DDC) is - ANS-electronic controls use for gadget operation and
monitoring
Direction of rotation of a unmarried segment induction motor is determined by. - ANS-the
direction of present day glide thru the begin winding.
Divided Voltage can be calculated by using; - ANS-I times R
Excessive contemporary may be because of; - ANS-brief circuit.
Fuses are sized with the aid of: - ANS-Volts & Amps
How many watts of power are utilized by a heater working at 240 volts and drawing 5 amps? -
ANS-1200 watts
How many Watts of Power are utilized by a heater working at 460 Volts and drawing five Amps?
- ANS-2,three hundred Watts
How lots resistance should be placed in a a hundred and twenty volt circuit a good way to
restrict the modern to 2 amps? - ANS-60 Ohms
If contacts end up badly pitted, it's far ideal to. - ANS-update the contacts or manipulate
If the conductor in an AÇ circuit is wound right into a coil, the ensuing EMF opposes the deliver
voltage. This opposition is called. - ANS-inductive reactance.
A ___________ is typically used on a single section capacitor start fractional horse strength
compressor motor to disconnect the start winding after the motor starts offevolved. -
ANS-current relay
A 240 Volt, three twine circuit may be break up into 120 Volt circuits. - ANS-TRUE
A capacitor analyzer is designed to read; - ANS-the capacitive resistance of a capacitor.
A device with overload safety used to govern a motor is a; - ANS-line starter.
A diode is used to; - ANS-manage the route of electron flow.
A parallel circuit includes three resistors.R1 = 30 Ohms, R2 = 15 Ohms, R3 = 10 Ohms. If the
contemporary via R2 is 4 Amps (I = 4 Amps), what is the source Voltage? - ANS-60 volts
A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance equals; - ANS-6
ohms.
A solenoid valve coil operates on the precept of - ANS-electromagnetism.
A step up transformer increases; - ANS-voltage.
A 3 segment load calls for at the very least; - ANS-three supply traces.
A transducer can create a signal based totally on. - ANS-pressure.
A transformer has one thousand turns of cord within the primary coil and 2000 turns in the
secondary coil. If a hundred and twenty volts are implemented, the output voltage can be; -
ANS-240 volts
A transformer has a thousand turns of wire in the number one coil and 500 turns inside the
secondary coil. If a hundred and twenty volts are implemented, the output voltage might be. -
ANS-60 volts
A regular thermocouple used on a fuel furnace can. - ANS-generate a small DC electric modern.
An electron has; - ANS-a bad rate.
An electronically commutated motor (ECM) is designed to; - ANS-provide right air go with the
flow below various situations.
, An ohmmeter should in no way be linked to; - ANS-a live circuit or a charged capacitor till it has
been discharged
Any material so one can conveniently release electrons is known as; - ANS-A conductor
Capacitors are always connected _____________ to the start winding. - ANS-in collection
Capacitors are rated in - ANS-Microfarads & Volts.
Circuit breakers & fuses are ordinarily used to offer; - ANS-safety from an overload of current.
Circuit fuses and breakers are ordinarily used to guard - ANS-masses
Contactors are rated according to the most amperage through the; - ANS-contacts.
Current waft is: - ANS-The glide of electrons within the circuit.
Direct Digital Control (DDC) is - ANS-electronic controls use for gadget operation and
monitoring
Direction of rotation of a unmarried segment induction motor is determined by. - ANS-the
direction of present day glide thru the begin winding.
Divided Voltage can be calculated by using; - ANS-I times R
Excessive contemporary may be because of; - ANS-brief circuit.
Fuses are sized with the aid of: - ANS-Volts & Amps
How many watts of power are utilized by a heater working at 240 volts and drawing 5 amps? -
ANS-1200 watts
How many Watts of Power are utilized by a heater working at 460 Volts and drawing five Amps?
- ANS-2,three hundred Watts
How lots resistance should be placed in a a hundred and twenty volt circuit a good way to
restrict the modern to 2 amps? - ANS-60 Ohms
If contacts end up badly pitted, it's far ideal to. - ANS-update the contacts or manipulate
If the conductor in an AÇ circuit is wound right into a coil, the ensuing EMF opposes the deliver
voltage. This opposition is called. - ANS-inductive reactance.
