MID TERM EXAM WITH 100 REAL EXAM QUESTIONS AND CORRECT VERIFIED ANSWERS UPDATED VERSION .

MID TERM EXAM WITH 100 REAL EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS UPDATED VERSION 2024-2025.




What is the first step in the operational sequence?
A) The draft switch closes.


B) The burners light.


C) The thermostat calls for heat.


D) The igniter is energized.Soot accumulation on the heat exchanger
is: - CORRECT ANSWERS-C) The thermostat calls for heat.


Grounded windings can be detected by measuring the resistance with
a multimeter between:
A) The start winding and common terminal.
B) The windings and the motor frame.
C) The start winding and run winding.
D) The run winding and common terminal. - CORRECT ANSWERS-B)
The windings and the motor frame.

,What type of drive would move the driven device at the same speed
as the motor?
A) Gear drive
B) Direct drive
C) Overdrive
D) Belt drive - CORRECT ANSWERS-B) Direct drive


Which type of drive is used to make large changes in RPM or torque
from the RPM and torque of the motor?
A) Direct drive
B) Overdrive
C) Belt drive
D) Gear drive - CORRECT ANSWERS-D) Gear drive


The strength of an electric motor is rated in:
A) Full load amps
B) Service factor
C) RPM
D) Horsepower - CORRECT ANSWERS-D) Horsepower


The RPM of a belt driven blower can be determined by:

,A) Multiplying motor RPM and fan sheave diameter and then divide
by the motor sheave diameter
B) Multiplying motor RPM and motor sheave diameter and then
divide by the fan sheave diameter
C) Multiplying motor and fan sheave diameter and then dividing that
total into the motor RPM
D) Multiplying motor and fan sheave diameter and then divide by the
motor RPM - CORRECT ANSWERS-B) Multiplying motor RPM and
motor sheave diameter and then divide by the fan sheave diameter


Which of the following formulas can be used to calculate fan speed
(RPM)?
A) Fan RPM = Motor RPM × Motor Sheave Diameter Fan Sheave
Diameter
B) Fan RPM = Fan Sheave Diameter × Motor Sheave Diameter Motor
RPM
C) Fan RPM = Motor RPM × Fan Sheave Diameter Motor Sheave
Diameter
D) Fan RPM = Motor RPM Motor Sheave Diameter × Fan Sheave
Diameter - CORRECT ANSWERS-A) Fan RPM = Motor RPM × Motor
Sheave Diameter Fan Sheave Diameter


Motors are rated in either ________ or ________ operation.
A) instantaneous, intermittent
B) instantaneous, interrupted

, C) interrupted, continuous
D) intermittent, continuous - CORRECT ANSWERS-D) intermittent,
continuous


Most indoor blower motors are ________ motors.
A) single speed shunt field
B) multi-speed shunt field
C) multi-speed PSC
D) single speed PSC - CORRECT ANSWERS-C) multi-speed PSC


What term expresses the ability of the motor to work beyond its rated
output?
A) Horsepower
B) Service factor
C) Full load amps
D) RPM - CORRECT ANSWERS-B) Service factor


An open winding falls into which general motor failure area?
A) Motor starting components
B) Attitude problem
C) Electrical problem
D) Mechanical problems - CORRECT ANSWERS-C) Electrical problem