Electronics Engineering MCQs [Quiz 35]

Q1. If a capacitor is rated for 200V dc, what is its effective ac working voltage?
A. 50 V
B. 100 V
C. 200 V
D. 400 V

Q2. If resonant frequency is 10 kHz and quality factor is 50, then
A. Bandwidth is 200 Hz
B. XL = is 50,000 fi
C. R is 50 fi
D. XC = is 50,000 fi

Q3. Which statement is true?
A. A series resonant circuit is of high impedance
B. A parallel resonant circuit is of low impedance
C. A series resonant circuit is inductive if it operates at a frequency higher than the resonant frequency
D. A parallel resonant circuit is inductive if it operates at a frequency higher than the resonant frequency

Q4. What is considered as the most important value of a sine wave?
A. Effective value
B. Peak value
C. Average value
D. Instantaneous value

Q5. An ac series circuit is composed of a resistance of 20 fi, inductive reactance of 40 fi, and a capacitive reactance of 15 fi. If a current of 1 ampere is flowing, what is the applied voltage
A. 320 V
B. 32 V
C. 220 V
D. 22 V

Q6. An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil
A. Faradic current
B. Transient ac current
C. Inductive current
D. Capacitive current

Q7. The value of temperature coefficient (a) is dependent upon
A. The nature of material and temperature
B. The length of material
C. The cross-sectional area of the material
D. The volume of the material

Q8. At what frequency will the current in a series RLC circuit reach its maximum value for an applied voltage of 15 V with R = 500 fi, L = 100 µH and C = 0.001 µF?
A. 503 kHz
B. 403 kHz
C. 603 kHz
D. 303 kHz

Q9. If two equal resistances connected in series across a certain supply are now connected in parallel across the same supply, the power produced will be that of series connection
A. One-half
B. One-fourth
C. Two times
D. Four times

Q10. What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?
A. 1.65 kHz
B. 16.5 MHz
C. 16.5 kHz
D. 165 kHz

Updated: 8th August 2019 — 2:15 PM

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