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Auto 120 Mechanics Electricity exam 2024_2025 fully solved & updated.
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Auto 120 Mechanics Electricity exam 2024_2025 fully solved & updated.
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Auto 120 Mechanics Electricity exam2024/2025 fully solved & updated
Which of the following methods can be used to form an electrical current?
a. Magnetic induction.
b. Chemical reaction.
c. Heat.
d. All of the above.
e. None of the above. - ANSWER-d. All of the above.
In a parallel circuit:
a. Total resistance is the sum of all of the resistances in the circuit.
b. Total resistance is less than the lowest resistor.
c. Amperage will decrease as more branches are added.
d. All of the above. - ANSWER-Total resistance is less than the lowest resistor.
All of the following concerning voltage drop are true EXCEPT:
a.All of the voltage from the source must be dropped before it returns to the
source.
b. Corrosion is not a contributor to voltage drop.
c. Voltage drop is the conversion of electrical energy into another energy form.
d. Voltage drop can be measured with a voltmeter. - ANSWER-b. Corrosion is not
a contributor to voltage drop.
All of the following concerning voltage are true EXCEPT:
a. Voltage is the electrical pressure that causes electrons to move.
b. Voltage will exist between any two points in a circuit unless the potential drops
to zero.
c. Voltage is A × R.
, d. In a series circuit, voltage is the same at all points in the circuit. - ANSWER-d.
In a series circuit, voltage is the same at all points in the circuit.
Wattage is:
a. A measure of the total electrical work being performed.
b. Expressed as P = R x A.
c. Both A and B.
d. Neither A nor B. - ANSWER-a. A measure of the total electrical work being
performed.
Which answer is incorrect concerning a series circuit?
a. Total resistance is the sum of all of the resistances in the circuit.
b. Total resistance is less than the lowest resistor.
c. Amperage will decrease as more resistance is added.
d. All of the above. - ANSWER-b. Total resistance is less than the lowest resistor.
Which statement about electrical currents is correct?
a. Alternating current can be stored in a battery.
b. Alternating current is produced from a voltage and current that remain
constant and flow in the same direction.
c. Direct current is used for most electrical systems on the automobile.
d. Direct current changes directions from positive to negative - ANSWER-c. Direct
current is used for most electrical systems on the automobile.
Induction:
a. Is the magnetic process of producing a current flow in a wire without any
actual contact to the wire.
b. Exists when the magnetic field or the conductor is in motion.
c. All of the above.
d. None of the above. - ANSWER-c. All of the above.
All of the following statements are true EXCEPT:
a. If the resistance increases and the voltage remains constant, the amperage will
increase.
b. Ohm's law can be stated as A = V/R.
c. If voltage is increased, amperage will increase.
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