Questions and answers for exam Preparation

MCQs

Total Questions : 480 | Page 41 of 48 pages

Question 401. Which one of the following statements best applies to a series RLC circuit?

The voltage waveform for each component always has the same amplitude and phase as the applied voltage
The current waveform for each component always has the same amplitude and phase as the applied current
All of the above
The sum of the current is always less than the applied current
None of the above

Discuss Question

Answer: Option B. -> The current waveform for each component always has the same amplitude and phase as the applied current

Question 402. Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit?

Number of lines of force
Flux density
Reluctance
Magnetomotive force
None of the above

Discuss Question

Answer: Option A. -> Number of lines of force

Question 403. When applying a square waveform to a capacitor, the circuit tends to:

peak the voltage and round off the current waveforms
peak the current and round off the voltage waveforms
round off both the voltage and current waveforms
peak both the voltage and current waveforms
None of the above

Discuss Question

Answer: Option B. -> peak the current and round off the voltage waveforms

Question 404. When a series RLC circuit is operating at its resonant frequency:

capacitive reactance is greater than the inductive reactance
inductive reactance is greater than the capacitive reactance
inductive reactance is equal to the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
None of the above

Discuss Question

Answer: Option C. -> inductive reactance is equal to the capacitive reactance

Question 405. Who invented the first junction transistor?

Smith
Gomes
Fisher
Shockley
None of the above

Discuss Question

Answer: Option D. -> Shockley

Question 406. An audio transformer has a turn ratio of 9, What is its impedance ratio?

81
85
6
9
None of the above

Discuss Question

Answer: Option A. -> 81

Question 407. Which one of the following statements is true?

The secondary voltage for a step-down power transformer is greater than the primary voltage
The secondary current for a step-down power transformer is greater than the primary voltage
Parallel RLC circuit operated below its resonant frequency
purely resistive circuit
None of the above

Discuss Question

Answer: Option B. -> The secondary current for a step-down power transformer is greater than the primary voltage

Question 408. How many protons does the nucleus of a silicon atom contain?

4
29
14
48
None of the above

Discuss Question

Answer: Option C. -> 14

Question 409. A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?