This is the Multiples Choice Questions Part 6 of the Series in Electrical Circuit as one of the Electronics Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electronics Engineering field, Electronics Books, Journals and other Electronics References.
MCQ Topic Outline included in ECE Board Exam Syllabi
- MCQ in AC-DC circuits
- MCQ in Resistors
- MCQ in Inductors
- MCQ in Capacitors
Continue Practice Exam Test Questions Part 6 of the Series
Choose the letter of the best answer in each questions.
251. A neon glow lamp used as a night light ionizes at approximately.
A. 70 V
B. 80 V
C. 90 V
D. 100 V
Answer: Option A
Solution:
252. What dielectric is generally employed by a variable capacitor?
A. Mica
B. Air
C. Electrolyte
D. Ceramic
Answer: Option B
Solution:
A. LOCAP switch
B. AntiLOCAP switch
C. Anticapacitance switch
D. Capacitance switch
Answer: Option C
Solution:
A. Bifilar resistor
B. Wire-wound resistor
C. Anti-inductive resistor
D. Bleeder resistor
Answer: Option A
Solution:
A. Mixture
B. Compound
C. Alloy
D. Ionization
Answer: Option C
Solution:
A. Peak
B. Average
C. Rms
D. Instantaneous
Answer: Option A
Solution:
A. Increases two times
B. Increases four times
C. Decreases two times
D. Decreases four times
Answer: Option A
Solution:
A. Decreases
B. Increases
C. Decreases or increases
D. Decreases, increases or remains the same
Answer: Option C
Solution:
A. Halfway between maximum and minimum
B. Maximum
C. Minimum
D. Zero
Answer: Option B
Solution:
260. In a circuit, a passive element is one which
A. Supplies energy
B. Receives energy
C. Both supplies and receives energy
D. Attenuates signal
Answer: Option B
Solution:
261. Rationalizing the denominator of a complex number means
A. Eliminating the j component in the denominator
B. Adding j component in the denominator
C. Eliminating the j component in the numerator
D. Adding j component in the numerator
Answer: Option A
Solution:
262. When two complex conjugates are subtracted, the result is a
A. Quadrature component only
B. Complex component
C. In-phase component
D. Real component
Answer: Option A
Solution:
A. 0
B. I^2XL
C. IXL
D. IXL2
Answer: Option A
Solution:
A. 2.5
B. 5
C. 10
D. 25
Answer: Option B
Solution:
A. 10
B. 5
C. 50
D. 100
Answer: Option A
Solution:
A. Increased
B. Decreased
C. Constant
D. Zero
Answer: Option A
Solution:
A. Number of plates
B. Dielectric
C. Distance between plates
D. Plate area
Answer: Option C
Solution:
A. Greater electrical power saving
B. Power loss is minimum
C. Appliances have different current ratings
D. All of the above
Answer: Option C
Solution:
A. V(m)^2
B. V(m)
C. V/m^2
D. V/m
Answer: Option D
Solution:
270. Which of the following is the peakiest?
A. Square wave
B. Sinusoidal wave
C. Triangular wave
D. Rectangular wave
Answer: Option C
Solution:
A. Because it is a simple circuit
B. Because dc circuits require only resistance as load
C. Because they do not exist in a dc circuit
D. Because frequency of dc is zero
Answer: Option D
Solution:
A. Greater than the largest capacitor
B. Smaller than the largest capacitor
C. Smaller than the smallest capacitor
D. Greater than the smallest capacitor
Answer: Option A
Solution:
A. Resistance
B. Reactance
C. Inductance
D. Capacitance
Answer: Option B
Solution:
A. Current
B. Voltage
C. Both current and voltage
D. Neither current nor voltage
Answer: Option B
Solution:
A. 2L and 1/2 A
B. Does not matter because the volume of copper remains the same
C. L and A
D. ½ L and 2 A
Answer: Option D
Solution:
A. Quality factor
B. Power factor
C. Power ratio
D. Reactive power
Answer: Option D
Solution:
A. 50 %
B. 100 %
C. 25 %
D. 75 %
Answer: Option A
Solution:
A. Linear law
B. Hyperbolic law
C. Inverse-square law
D. Exponential law
Answer: Option D
Solution:
279. Norton’s theorem is what form of an ac equivalent circuit?
A. Voltage
B. Current
C. Both voltage and current
D. Neither voltage nor current
Answer: Option B
Solution:
A. 200 μF
B. 2 μF
C. 100 μF
D. 0.5 μF
Answer: Option B
Solution:
281. An inductive load always has a ___________ power factor
A. Leading
B. Lagging
C. Zero
D. Unity
Answer: Option B
Solution:
A. Less than the smallest resistance in the connection
B. Greater than the smallest resistance in the connection
C. Between the smallest and greatest resistance in the connection
D. Increasing and decreasing depending upon the supply voltage
Answer: Option A
Solution:
A. Large self-induced voltage across L
B. Long time constant
C. Low resistance of the open switch
D. Surge of resistance
Answer: Option A
Solution:
A. Polar diagram
B. Scalar quantity
C. Velocity
D. Phasor
Answer: Option D
Solution:
285. Which factor does not affect resistance?
A. Length
B. Resistivity
C. Cross-sectional area
D. Mass
Answer: Option D
Solution:
286. Which of the following capacitors are used only in dc circuits?
A. Mica
B. Ceramic
C. Mylar
D. Electrolytic
Answer: Option D
Solution:
287. The maximum power transfer theorem is used in
A. Power system
B. Electronic system
C. Refrigeration
D. Air conditioning
Answer: Option B
Solution:
288. In Norton’s theorem, the short circuit current is obtained by
A. Opening the load terminals
B. Shorting the load terminals
C. Opening the voltage source
D. Shorting the voltage source
Answer: Option B
Solution:
A. RL = 2 r
B. RL = 1.5 r
C. RL = r
D. RL = 3 r
Answer: Option C
Solution:
A. 220 V
B. 150 V
C. 110 V
D. 22 V
Answer: Option C
Solution:
A. Smaller than the smallest capacitor
B. Smaller than the largest capacitor
C. Greater than any of the capacitor
D. Greater than the largest capacitor
Answer: Option A
Solution:
A. Superposition theorem
B. Millman’s theorem
C. Thevenin’s theorem
D. Norton’s theorem
Answer: Option C
Solution:
A. Figure of merit
B. Figure of demerit
C. Noise factor
D. Noise figure
Answer: Option A
Solution:
A. CV^2/2
B. 2Q^2/C
C. C^2/V
D. CV
Answer: Option A
Solution:
A. Superposition theorem
B. Millman’s theorem
C. Thevenin’s theorem
D. Norton’s theorem
Answer: Option D
Solution:
296. Which of the following capacitors has the highest cost per μF?
A. Plastic
B. Air
C. Mica
D. Electrolytic
Answer: Option D
Solution:
A. 60 W
B. 30 W
C. 15 W
D. 4 W
Answer: Option B
Solution:
A. Ohm’s law
B. Coulomb’s law
C. Kirchhoff’s first law
D. Kirchhoff’s second law
Answer: Option A
Solution:
299. Another term for superconductor.
A. Generic conductor
B. Ultraconductor
C. Cryotron
D. Cryogenic conductor
Answer: Option D
Solution:
300. A circuit whose parameters change with voltage or current.
A. Non-linear circuit
B. Linear circuit
C. Complex circuit
D. Passive circuit
Answer: Option A
Solution:
Questions and Answers in Electrical Circuit
Following is the list of practice exam test questions in this brand new series:
Complete List of MCQ in Electronics Engineering per topic
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