Category: Electronics Engineering

Latest multiple choice questions with answers for electronics engineering students.

Electronics Engineering MCQs [Quiz 40]

Q1. “Any resistance R in a branch of a network in which a current I is flowing can be replaced by a voltage equal to IR”. This states
A. Compensation theorem
B. Reciprocity theorem
C. Millman’s theorem
D. Superposition theorem

Q2. The internal resistance of an ideal current source is
A. Infinite
B. Zero
C. Equal to the load resistance
D. To be determined

Q3. If three 100-pF capacitors are connected in series, then the total capacitance is
A. 300 pF
B. 100 pF
C. 50 pF
D. 33.3 pF

Q4. An inductance of 1 mH is
A. 0.001 H
B. 0.01 H
C. 0.0001 H
D. 0.10 H

Q5. A capacitor is basically constructed of
A. Two conductors separated by a dielectric
B. Two dielectric separated by a conductor
C. Conductors and dielectric
D. Conductors and semiconductors

Q6. In an inductive coil, the rate of rise of current is maximum
A. Near the final maximum value of current
B. At mid-value of current
C. At half-power points
D. After one time constant

Q7. Two complex numbers or phasors are said to be conjugate if they
A. Differ only in the algebraic sign of their quadratic components
B. Differ only in the algebraic sign of their real components
C. Are equal in their real and quadrature components including algebraic signs
D. Are equal in their real components but differ in their quadrature components including algebraic signs.

Q8. In an ac circuit with a resistive branch and an inductive branch in parallel, the
A. Voltage across the inductance leads the voltage across the resistance by 90°
B. Resistive branch current is 90° out of phase with the inductive branch current
C. Resistive and inductive branch currents have the same phase
D. Resistive and inductive branch currents are 180° out-of-phase

Q9. In an ac circuit with XL and R in series, the
A. Voltages across R and XL are in phase
B. Voltage across R lags the voltage across XL by 90°
C. Voltages across R and XL are 180° out-of-phase
D. Voltage across R leads the voltage across XL by 90°

Q10. Leakage resistance in a capacitor results into
A. Internal heating
B. Internal bleeding
C. Shorter useful life
D. Short-circuiting

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