Exam (elaborations)
Nate Core Practice Test – Questions & Answers
Nate Core Practice Test – Questions & Answers
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Nate Core Practice Test – Questions & AnswersA judgment ✔️Ans - An opinion is
Easy to use ✔️Ans - Which of the following is a future of a product or
service
A truth ✔️Ans - A fact is
Saves time ✔️Ans - Which of the following is a benefit of a product or
service
DOT ✔️Ans - Which of the following agencies has jurisdiction over the
shipping and labeling of refrigerant cylinders?
The flow of electrons through a conductor ✔️Ans - Electricity is
Electrical pressure ✔️Ans - Voltage in an energized electrical circuit can be
thought of as
A current will be induced in that conductor ✔️Ans - If a conductor is moved
through a field of magnetic flux,
It divides across each of the loads ✔️Ans - What happens to the voltage in a
series circuit
With an ammeter ✔️Ans - How is current flow measured in an electrical
circuit
A magnetic field will be established around that conductor ✔️Ans -
Whenever current flows through a conductor
1/1,000,000 of an ampere ✔️Ans - A microampere is
.90 Because formula (V•A = Watts/638)
So (6•118= 708 so 638/708= .90 ✔️Ans - Given a 1/2 HP blower motor
that draws 6 A and 118 V during operation. A watt meter is then connected
and shows a reading of 638 Watts. What is the power factor for the circuit
, 20.45 ✔️Ans - Given a domestic hot water heater with 4,500/4,500 watt
elements and non-simultaneous. What is the anticipated amp draw on an
energized element when 220 V is read at that element?
Acts as a conductor in one direction and as an insulator in the other direction
✔️Ans - A diode in an electronic circuit
To keep it at zero potential ✔️Ans - Why are the frames of electrical device
is grounded
Schematic wiring diagram ✔️Ans - Which of the following electrical
diagrams would a service technician use for troubleshooting a system?
Protects users from dangerous ground faults ✔️Ans - A GFCI is an electrical
device that?
Provides proportional control to a motor that drives a Valve, a damper, etc.
✔️Ans - What is the function of a Feedback potentiometer an electrical circuit
1800 rpm Because (7,200/4=1,800) ✔️Ans - What is the synchronous
speed of a four pole motor?
Ball bearings ✔️Ans - Which of the following would be preferred for a
motor directly connected to a heavy blower wheel?
2 pole ✔️Ans - Which of the following motors will produce the greater
speed (RPM)?
Double ✔️Ans - If you double the RPM of a motor then the CFM will?
Three phase ✔️Ans - Which of the following motors has the best starting
torque?
Square ✔️Ans - If you double the RPM of a motor then the static pressure
will?
The external static pressure ✔️Ans - What determines the actual operating
RPM of a PSC blower motor?
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