Engineering MCQs

a. To provide a reference point for measuring voltage
b. To regulate voltage
c. To store electrical charge
d. To amplify electrical signals
Answer: a. To provide a reference point for measuring voltage

a. L
b. D
c. C
d. R
Answer: b. D

a. P = V/I
b. P = I/V
c. P = R/I^2
d. P = V^2/R
Answer: d. P = V^2/R

a. Voltage is the flow of electrical charge, while current is the potential difference between two points in a circuit.
b. Voltage is the potential difference between two points in a circuit, while current is the flow of electrical charge.
c. Voltage and current are the same thing.
d. Voltage is the energy stored in a circuit, while current is the energy used by the circuit.
Answer: b. Voltage is the potential difference between two points in a circuit, while current is the flow of electrical charge.

a. AC power flows in one direction only, while DC power flows in both directions.
b. AC power changes direction periodically, while DC power flows in one direction only.
c. AC power is used for high-voltage applications, while DC power is used for low-voltage applications.
d. AC power is more efficient than DC power.
Answer: b. AC power changes direction periodically, while DC power flows in one direction only.

a. D
b. R
c. C
d. L
Answer: a. D

a. Joule
b. Watt
c. Ohm
d. Volt
Answer: b. Watt

a. Volt
b. Ampere
c. Ohm
d. Henry
Answer: d. Henry

a. P = VI
b. P = V/I
c. P = I/V
d. P = V + I
Answer: a. P = VI

a. To store electrical charge
b. To amplify electrical signals
c. To regulate voltage
d. To resist changes in current flow
Answer: a. To store electrical charge