Questions and answers for exam Preparation

MCQs

Total Questions : 327 | Page 30 of 33 pages

Question 291. At _______ frequencies the parallel R-L circuit behaves as purely resistive

low
very low
high
very high

Discuss Question

Answer: Option D. -> very high
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 292. In a parallel R-C circuit, the current always________the applied voltage?

lags
leads
remains in phase with
none of the above

Discuss Question

Answer: Option B. -> leads
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 293. Capacitive susceptance is a measure of__________?

reactive power in a circuit
the extent of neutralisation of reactive power in a circuit
a purely capacitive circuit’s ability to pass current
a purely capacitive circuit’s ability to resist the flow of current

Discuss Question

Answer: Option C. -> a purely capacitive circuit’s ability to pass current
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 294. What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value________ ?

0°
45°
90°
180°

Discuss Question

Answer: Option C. -> 90°
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 295. In a sine wave the slope is constant_______?

between 0° and 90°
between 90° and 180°
between 180° and 270°
no where

Discuss Question

Answer: Option D. -> no where
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 296. Which of the following refers to a parallel circuit ?

The current through each element is same
The voltage across element is in proportion to it’s resistance value
The equivalent resistance is greater than any one of the resistors
The current through any one element is less than the source current

Discuss Question

Answer: Option D. -> The current through any one element is less than the source current
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 297. Aphasoris________?

a line which represents the magnitude and phase of an alternating quantity
a line representing the magnitude and direction of an alternating quantity
a coloured tag or band for distinction between different phases of a 3-phase supply
an instrument used for measuring phases of an unbalanced 3-phase load

Discuss Question

Answer: Option A. -> a line which represents the magnitude and phase of an alternating quantity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 298. Which of the following statements pertains to resistors only _____________?