RC Circuits – 8

5555555555

8. A 2 kΩ resistor is in series with a 0.015 μF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?

(a) 73.4 Ω and θ = –19.5°
(b) 707 Ω and θ = –19.5°
(c) 2121 Ω and θ = –19.5°
(d) 734 Ω and θ = –38.9°

Answer
Answer : (c)
Explanation
Explanation : Xc = 1/2πfC = 707 Ω Z = R – jXc = 2000 – j(707) |z| = sqrt(R*R + Xc*Xc) = 2121 Ω Phase angle = arctangent(Xc/R) = 19.5°
Subject Name : Electrical Engineering
Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT
Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant
Electrical Engineering Books

Sale
Objective Electrical Technology (6500+ Objective Questions...
V.K Mehta (Author); English (Publication Language); 1089 Pages - 11/30/2004 (Publication Date) - S Chand (Publisher)
₹ 630
Sale
An Integrated Course in Electrical Engineering
J.B. Gupta (Author); English (Publication Language); 1100 Pages - 01/01/2013 (Publication Date) - S.K. Kataria & Sons (Publisher)
₹ 1,112
Sale
Basic Electrical Engg
Binding: paperback; Language: english; This product will be an excellent pick for you; V.K Mehta (Author)
₹ 813
Sale
BASIC ELECTRICAL ENGG - REVISED ED
Product Condition: No Defects; Kulshreshtha D (Author); English (Publication Language); 880 Pages - 07/01/2017 (Publication Date) - McGraw Hill Education (Publisher)
₹ 420
Sale
A Handbook for Electrical Engineering(Old Edition)
ME Team (Author); English (Publication Language); 692 Pages - 01/01/2015 (Publication Date) - Made Easy Publications (Publisher)
₹ 210

GATE 2023 Total InfoENGG DIPLOMAUGC NET Total Info
IES 2023 Total InfoPSUs 2022 Total InfoCSIR UGC NET Total Info
JAM 2023 Total InfoM TECH 2023 Total InfoRAILWAY 2022 Total Info

Related Posts

  • RL Circuits - 185555555555 18. A 1.2 kΩ resistor is in series with a 15 mH coil across a 10 kHz ac source. The magnitude of the total impedance is ________. (a) 152.6 Ω (b) 1,526 Ω (c) 1,200 Ω (d) 942 Ω
    Tags: ω, circuits, kω, resistor, series, khz, ac, source, magnitude, total
  • RLC Circuits - 55555555555 5. A resistor of 3 kΩ, a 0.05 μF capacitor, and a 120 mH coil are in series across a 5 kHz, 20 V ac source. What is the impedance, expressed in polar form? (a) 636 Ω (b) 3,769 Ω (c) 433 Ω (d) 4,337 Ω
    Tags: ω, ac, impedance, source, khz, circuits, series, capacitor, μf, kω
  • RLC Circuits - 15555555555 1. A 10 Ω resistor, a 90 mH coil, and a 0.015 μF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is ________. (a) 1,616 Ω (b) 161 Ω (c) 3,387 Ω (d) 1,771 Ω
    Tags: ω, circuits, resistor, μf, capacitor, series, ac, source, impedance, magnitude
  • RL Circuits - 105555555555 10. A 47 Ω resistor is in series with an inductive reactance of 120 Ω across an ac source. The impedance, expressed in polar form, is ________. (a) 47 ∠68.6° Ω (b) 120 ∠68.6° Ω (c) 129 ∠31.4° Ω (d) 129 ∠68.6° Ω
    Tags: ω, °, circuits, resistor, series, ac, source, impedance, basic, electrical
  • RL Circuits - 145555555555 14. A 140 Ω resistor is in parallel with an inductor having 60 Ω inductive reactance. Both components are across a 12 V ac source. The magnitude of the total impedance is ________. (a) 5.51 Ω (b) 55.15 Ω (c) 90 Ω (d) 200 Ω
    Tags: ω, circuits, resistor, ac, source, magnitude, total, impedance, basic, electrical

LEAVE A REPLY

Please enter your comment!
Please enter your name here