Q3) Choose the correct answer9) When a capacitor is connected to an a.c. supply the current(a) leads the voltage by 180°(b) is in phase with the voltage(d) lags the voltage by 90°(c) leads the voltage by n/2 rad10) In an R-L-C series a.c. circuit a current of 5 A flows when the supply voltage is 100 V. Thephase angle between current and voltage is 60° lagging. Which of the following statements isfalse?(a) The circuit is effectively inductive(b) The apparent power is 500 VA(d) The true power is 250 W(c) The equivalent circuit reactance is 25 £211) An a.c. supply is 70.7 V, 50 Hz . Which of the following statements is false?(a) The periodic time is 20 ms.(b) The peak value of the voltage is 70.7 V(c) The r.m.s. value of the voltage is 70.7 V(d) The peak value of the voltage is 100 V12) When the frequency of an a.c. circuit containing resistance and capacitance is increased theimpedance(a) increases(b) decreases(c) stays the same

In this question we will write circuit question answers...

Q3) Choose the co 9) When a capacitor is connected to an a.c. supply the curr (a) leads the voltage by 180° (c) leads the voltage by 1/2 rad (b) is in (d) lags 10) In an R-L-C series a.c. circuit a current of 5 A flows phase angle between current and voltage is 60° lagging false? (a) The circuit is effectively inductive (c) The equivalent circuit reactance is 25 £2 11) An a.c. supply is 70.7 V, 50 Hz . Which of the follow (a) The periodic time is 20 ms. (b) The peak value of the voltage is 70.7 V (c) The r.m.s. value of the voltage is 70.7 V (d) The peak value of the voltage is 100 V 12) When the frequency of an a.c. circuit containing resis

Q3) Choose the co 9) When a capacitor is connected to an a.c. supply the curr (a) leads the voltage by 180° (c) leads the voltage by 1/2 rad (b) is in (d) lags 10) In an R-L-C series a.c. circuit a current of 5 A flows phase angle between current and voltage is 60° lagging false? (a) The circuit is effectively inductive (c) The equivalent circuit reactance is 25 £2 11) An a.c. supply is 70.7 V, 50 Hz . Which of the follow (a) The periodic time is 20 ms. (b) The peak value of the voltage is 70.7 V (c) The r.m.s. value of the voltage is 70.7 V (d) The peak value of the voltage is 100 V 12) When the frequency of an a.c. circuit containing resis

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 3PA: You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors...

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