Electrical Exam Study Guide 2024
II II II II II II II II II II II
Relays are generally used to control inductive loads up to ________ amps.
10 II
Resistance is: II II II
Opposition to current flow.
II II II II II II
One horsepower is equal to _______ watts
746 II II II II II II II II II II II
When troubleshooting the A/C system in the schematic (during operation), the following
II II II II II II II II II II II
conditions are found. The thermostat contacts are closed. The compressor and
II II II II II II II II II II II II II II II
condenser fan motors are short cycling. The blower motor is not running. When the fan
II II II II II II II II II II II II II II II II
switch at the thermostat is moved from the AUTO position to the FAN ON position, the
II II II II II II II
blower runs. This could be caused by;
II II II II II II
A faulty thermostat - AUTO/FAN ON switch.
II II II II II II II
An ohmmeter should never be connected to a; II II II II II II
Charged capacitor until it has been discharged.
II II II II II II II II II II II
The thermal overload contacts on a line starter are usually ___ reset.
manual II II II II II II II II II II II II II II
What charges the pressure signal in an electronic oil safety switch to an electrical signal?
Transducer.
II II II II II II II II II II II II II II II II II
In the schematic, what voltage would be found from terminal Y to the output side of the coil
II II II II II II II II II II II II II II II II II II
on line #11? (Assume the thermostat is in the closed position and the fan is set to AUTO.)
II
24 volts.
II II II II II II II II II II II
When troubleshooting the A/C system in the schematic, the following conditions are
II II II II II II II II II II II II II
found. The thermostat contacts are closed. The compressor and condenser fan are not
II II II II II II II II II II II
running. The blower motor is running. This could be caused by;
II II II II II II II II II II II
An open HP, LP, overloads, or oil pressure switch line (line #11).
II II II II II II II II
Which of the following motors is most energy efficient.
ECM.
, II II II II II II II II
Circuit breakers & fuses are primarily used to provide; II II II II
Protection from an overloads current.
II II II II II II II II II II II II II II II II II
The voltage to ground of a High Leg or Stinger Leg on a three phase open Delta system
II II II
will be approximately; II
208 V II II II II II II II II II II II II II II II II
In the schematic, what voltage would be found from terminal G to the load side of the
II II II II II II II II II II II II II II II II
transformer? (Assume the thermostat is in the closed position and the fan is set to AUTO.)
II
0 volts.
II II II II II II II II
When checking the windings of a three phase motor;
II II II II II II II
all three terminals should show the same resistance.
II II II II II II II II II II II
A device with overload protection used to control a motor is a;
II II II
direct on line starter.
II II II II II II II II II
To change direction of rotation of a three phase motor; II II II II II II II
change the position of any two supply wires.
II II II II II II II II II II
The symbol for a heating thermostat is represented by diagram ____
B
II II II II II II II II II II II
The electric meter on a house measures the _______ passing through it.
Wattage II II II II II II II II II II II II II II II
In the schematic, what voltage would be found across the fuse in line #10? (Assume the
II II II II II II II II II II II II II
thermostat is in the closed position and the fan is set to AUTO.)
II
0 volts.
II II
An electron has;
II II
a negative charge.
II II II II II II II II II II II II II II II II II
If the conductor in an AC circuit is wound into a coil, the resulting EMF opposes the supply
II II II II II
voltage. This opposition is called; II
inductive resistance.
II II II II II II II II II II
In the schematic, if the fuse in L2 is blown the; II II II II II
blower motor will continue to operate.
II II II II II II II II II II II
Relays are generally used to control inductive loads up to ________ amps.
10 II
Resistance is: II II II
Opposition to current flow.
II II II II II II
One horsepower is equal to _______ watts
746 II II II II II II II II II II II
When troubleshooting the A/C system in the schematic (during operation), the following
II II II II II II II II II II II
conditions are found. The thermostat contacts are closed. The compressor and
II II II II II II II II II II II II II II II
condenser fan motors are short cycling. The blower motor is not running. When the fan
II II II II II II II II II II II II II II II II
switch at the thermostat is moved from the AUTO position to the FAN ON position, the
II II II II II II II
blower runs. This could be caused by;
II II II II II II
A faulty thermostat - AUTO/FAN ON switch.
II II II II II II II
An ohmmeter should never be connected to a; II II II II II II
Charged capacitor until it has been discharged.
II II II II II II II II II II II
The thermal overload contacts on a line starter are usually ___ reset.
manual II II II II II II II II II II II II II II
What charges the pressure signal in an electronic oil safety switch to an electrical signal?
Transducer.
II II II II II II II II II II II II II II II II II
In the schematic, what voltage would be found from terminal Y to the output side of the coil
II II II II II II II II II II II II II II II II II II
on line #11? (Assume the thermostat is in the closed position and the fan is set to AUTO.)
II
24 volts.
II II II II II II II II II II II
When troubleshooting the A/C system in the schematic, the following conditions are
II II II II II II II II II II II II II
found. The thermostat contacts are closed. The compressor and condenser fan are not
II II II II II II II II II II II
running. The blower motor is running. This could be caused by;
II II II II II II II II II II II
An open HP, LP, overloads, or oil pressure switch line (line #11).
II II II II II II II II
Which of the following motors is most energy efficient.
ECM.
, II II II II II II II II
Circuit breakers & fuses are primarily used to provide; II II II II
Protection from an overloads current.
II II II II II II II II II II II II II II II II II
The voltage to ground of a High Leg or Stinger Leg on a three phase open Delta system
II II II
will be approximately; II
208 V II II II II II II II II II II II II II II II II
In the schematic, what voltage would be found from terminal G to the load side of the
II II II II II II II II II II II II II II II II
transformer? (Assume the thermostat is in the closed position and the fan is set to AUTO.)
II
0 volts.
II II II II II II II II
When checking the windings of a three phase motor;
II II II II II II II
all three terminals should show the same resistance.
II II II II II II II II II II II
A device with overload protection used to control a motor is a;
II II II
direct on line starter.
II II II II II II II II II
To change direction of rotation of a three phase motor; II II II II II II II
change the position of any two supply wires.
II II II II II II II II II II
The symbol for a heating thermostat is represented by diagram ____
B
II II II II II II II II II II II
The electric meter on a house measures the _______ passing through it.
Wattage II II II II II II II II II II II II II II II
In the schematic, what voltage would be found across the fuse in line #10? (Assume the
II II II II II II II II II II II II II
thermostat is in the closed position and the fan is set to AUTO.)
II
0 volts.
II II
An electron has;
II II
a negative charge.
II II II II II II II II II II II II II II II II II
If the conductor in an AC circuit is wound into a coil, the resulting EMF opposes the supply
II II II II II
voltage. This opposition is called; II
inductive resistance.
II II II II II II II II II II
In the schematic, if the fuse in L2 is blown the; II II II II II
blower motor will continue to operate.
