Unit 1 Electrical Exam Prep Questions – Electrical
Fundamentals – study material
1,000 VA - ANS ✔✔One kVA is equal to
Salt Water - ANS ✔✔Which of the following is the most conductive?
Increase - ANS ✔✔If the contact resistance of a connection increases and the current of the
circuit (load) remains the same, then the voltage dropped across the connection will?
Reduced by half - ANS ✔✔To double the current of a circuit when the voltage remains constant,
the R (resistance) must be ______________?
A Shorted Circuit - ANS ✔✔An ohmmeter is being used to test a relay coil. The equipment
instructions indicate that the resistance of the coil should be between 30 and 33 ohms. The
ohmmeter indicates that the actual resistance is less than 22 ohms. This reading most likely
indicates ______________?
Voltage, Current, and Resistance. Any pair of these variables. - ANS ✔✔To calculate the energy
consumed in watts by a resistive appliance, you need to know __________ of the circuit.
P = E^2 / R
P= 120V^
P= 1,440 - ANS ✔✔The power consumed by a resistor can be expressed by the formula I^2 x R.
If 120V is applied to a 10-ohm resistor, the power consumed will be _________.
P = I^2 x R - ANS ✔✔Power loss in a circuit because of heat can be determined by the formula
________.
Fundamentals – study material
1,000 VA - ANS ✔✔One kVA is equal to
Salt Water - ANS ✔✔Which of the following is the most conductive?
Increase - ANS ✔✔If the contact resistance of a connection increases and the current of the
circuit (load) remains the same, then the voltage dropped across the connection will?
Reduced by half - ANS ✔✔To double the current of a circuit when the voltage remains constant,
the R (resistance) must be ______________?
A Shorted Circuit - ANS ✔✔An ohmmeter is being used to test a relay coil. The equipment
instructions indicate that the resistance of the coil should be between 30 and 33 ohms. The
ohmmeter indicates that the actual resistance is less than 22 ohms. This reading most likely
indicates ______________?
Voltage, Current, and Resistance. Any pair of these variables. - ANS ✔✔To calculate the energy
consumed in watts by a resistive appliance, you need to know __________ of the circuit.
P = E^2 / R
P= 120V^
P= 1,440 - ANS ✔✔The power consumed by a resistor can be expressed by the formula I^2 x R.
If 120V is applied to a 10-ohm resistor, the power consumed will be _________.
P = I^2 x R - ANS ✔✔Power loss in a circuit because of heat can be determined by the formula
________.
