JobSandhan.com

Latest Govt Job Notification Sarkari Naukri Employment News 2018

Capacitance MCQ Questions Answers Electrical Engineering

Electrical Engineering Capacitance MCQ Questions Answers


1) 64 drops of radius ‘r’ combine to form a bigger drop of radius R. The ratio of capacitances of bigger to smaller drop is

a) 1 : 4

b) 2 : 1

c) 1 : 2

d) 4 : 1

View Answer

2) A capacitor of 100 pF is charged to 100 V. The charge accumulated on the plates of the capacitor is

a) 10‑6C

b) 6 x 10-2 C

c) 10-8C

d) 6 x 10-4 C

View Answer

3) The charging of a capacitor through a resistance follows

a) linear law

b) square law

c) exponential law

d) none of the above

View Answer

4) In a variable capacitor, the dielectric used is generally

a) air

b) solid

c) electrolyte

d) none of the above

View Answer

5) A gang capacitor is a variable capacitor in which capacitance is changed by changing

a) distance between plates

b) plate area

c) both a and b

d) dielectric

View Answer

6) An RC series circuit is connected to a 300 V d.c source. The voltage across the capacitor after 1 time constant is

a) 200 V

b) 126.5 V

c) 170.2 V

d) 189.6 V

View Answer

7) A trimmer  is a variable capacitor in which capacitance is changed by changing

a) distance between plates

b) plate area

c) both a and b

d) dielectric

View Answer

8) When the total charge in a capacitor is doubled, the energy stored

a) remains the same

b) is doubled

c) is halved

d) is quadrupled

View Answer

9) Two indentical capacitors are connected in parallel and changed to a potential of V. They are separated and then connected in series. The p.d. across series combination is

a) V

b) 4V

c) 3V

d) 2V

View Answer
[fbcomments]
JobSandhan.com © 2018        Home     About Us     Sitemap     Disclaimer     Privacy Policy     Contact us