Basic Electrical Engineering Questions and Answers
Q1.
Capacitors charge and discharge in __________ manner.
a) Linear
b) Constant
c) Square
d) Exponential
Answer: d
Q2.
Air has a dielectric constant of ___________
a) Unity
b) Zero
c) Infinity
d) Hundred
Answer: a
Q3.
What is the value of capacitance of a capacitor which has a voltage of 4V and ha 8C of charge?
a) 2F
b) 4F
c) 6F
d) 8F
Answer: a
Q4.
Unit of capacitance is___________
a) Volts
b) Farad
c) Henry
d) Newton
Answer: b
Q5.
What will happen to the capacitor just after the source is removed?
a) It will not remain in its charged state
b) It will remain in its charged state
c) It will start discharging
d) It will become zero
Answer: b
Q6.
Which among the following equations is incorrect?
a) Q=CV
b) Q=C/V
c) V=Q/C
d) C=Q/V
Answer: b
Q7.
Capacitance is directly proportional to__________
a) Area of cross section between the plates
b) Distance of separation between the plates
c) Both area and distance
d) Neither area nor distance
Answer: a
Q8.
What is the total capacitance when three capacitors, C1, C2 and C3 are connected in parallel?
a) C1/(C2+C3)
b) C1+C2+C3
c) C2/(C1+C3)
d) 1/C1+1/C2+1/C3
Answer: b
Q9.
When capacitors are connected in parallel, the total capacitance is always __________ the individual capacitance values.
a) Greater than
b) Less than
c) Equal to
d) Cannot be determined
Answer: a
Q10.
When capacitors are connected in parallel, what happens to the effective plate area?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
Answer: a
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