1. Which of the following is the unit of electric charge?
A. Ampere
B. Coulomb
C. Volt
D. Ohm
Answer: B) Coulomb
Rationale: The unit of electric charge is the Coulomb (C). An
Ampere is a unit of current, Volt is the unit of electric potential,
and Ohm is the unit of resistance.
2. The power factor in an AC circuit is defined as:
A. Voltage/Current
B. Current/Voltage
C. Active Power/Total Power
,D. Total Power/Active Power
Answer: C) Active Power/Total Power
Rationale: Power factor is the ratio of active (real) power to total
(apparent) power in an AC circuit. It is a measure of how
effectively electrical power is being used.
3. The Ohm's Law states that the current flowing through a
conductor is directly proportional to:
A. Resistance
B. Voltage
C. Power
D. Conductance
Answer: B) Voltage
Rationale: Ohm's Law states that the current through a conductor
between two points is directly proportional to the voltage across
the two points and inversely proportional to the resistance.
,4. Which of the following is used to store electrical energy in an
electric field?
A. Resistor
B. Capacitor
C. Inductor
D. Transformer
Answer: B) Capacitor
Rationale: A capacitor stores electrical energy in the form of an
electric field between its plates when charged.
5. Which of the following is a characteristic of an ideal voltage
source?
A. Zero internal resistance
B. Infinite internal resistance
C. Finite internal resistance
D. Varying voltage
, Answer: A) Zero internal resistance
Rationale: An ideal voltage source has zero internal resistance,
meaning it can maintain a constant voltage regardless of the
current drawn from it.
6. What is the unit of inductance?
A. Ampere
B. Ohm
C. Henry
D. Tesla
Answer: C) Henry
Rationale: The unit of inductance is the Henry (H). It represents
the ability of a coil to store magnetic energy.
7. A series RLC circuit is used to:
A. Filter signals
A. Ampere
B. Coulomb
C. Volt
D. Ohm
Answer: B) Coulomb
Rationale: The unit of electric charge is the Coulomb (C). An
Ampere is a unit of current, Volt is the unit of electric potential,
and Ohm is the unit of resistance.
2. The power factor in an AC circuit is defined as:
A. Voltage/Current
B. Current/Voltage
C. Active Power/Total Power
,D. Total Power/Active Power
Answer: C) Active Power/Total Power
Rationale: Power factor is the ratio of active (real) power to total
(apparent) power in an AC circuit. It is a measure of how
effectively electrical power is being used.
3. The Ohm's Law states that the current flowing through a
conductor is directly proportional to:
A. Resistance
B. Voltage
C. Power
D. Conductance
Answer: B) Voltage
Rationale: Ohm's Law states that the current through a conductor
between two points is directly proportional to the voltage across
the two points and inversely proportional to the resistance.
,4. Which of the following is used to store electrical energy in an
electric field?
A. Resistor
B. Capacitor
C. Inductor
D. Transformer
Answer: B) Capacitor
Rationale: A capacitor stores electrical energy in the form of an
electric field between its plates when charged.
5. Which of the following is a characteristic of an ideal voltage
source?
A. Zero internal resistance
B. Infinite internal resistance
C. Finite internal resistance
D. Varying voltage
, Answer: A) Zero internal resistance
Rationale: An ideal voltage source has zero internal resistance,
meaning it can maintain a constant voltage regardless of the
current drawn from it.
6. What is the unit of inductance?
A. Ampere
B. Ohm
C. Henry
D. Tesla
Answer: C) Henry
Rationale: The unit of inductance is the Henry (H). It represents
the ability of a coil to store magnetic energy.
7. A series RLC circuit is used to:
A. Filter signals
