This set of Basic Electronics Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Passive Circuit Components – Fixed Capacitors – Set 2”.
1. _________ is used for producing large amount of capacitance.
a) Electrolytic capacitor
b) Ceramic capacitor
c) Paper capacitor
d) Mica capacitor
View Answer
Explanation: Electrolytic capacitor is used to produce high amount of capacitance. According to the name, it consists of electrolyte and the electrolyte will be in the form of liquid state or in the powder state. This electrolyte acts as an dielectric.
2. The wet electrolyte is_____
a) Widely in use
b) Used only in some cases
c) Not in use
d) Does not exist
View Answer
Explanation: The wet electrolyte is not in use present. In wet electrolyte, the electrolyte used is in the form of liquid and the liquid has the danger of spilling. So, this is the main disadvantages. So, it is not in use now.
3. Cylindrical aluminium container is used as __________ in dry electrolyte.
a) Positive terminal
b) Negative terminal
c) Electrolyte
d) Dielectric
View Answer
Explanation: The capacitor is housed in the cylindrical aluminium container. Cylindrical aluminium container is used as negative terminal. The positive terminal is lug on the bottom end of the container.
4. Each section of the dry electrolytic capacitor is electrically independent of other sections.
a) True
b) False
View Answer
Explanation: Each section of the dry electrolytic capacitor is electrically independent of the other sections. So, when all the three sections are good, the other section may be in bad condition or damaged.
5. Each capacitor can be identified by _____
a) Capacitances
b) Voltages
c) Embossed marks
d) Frequencies
View Answer
Explanation: Each capacitor can be identified by their embossed marks. The embossed marks may be like half moon, triangle, square and may be no embossed mark. By, observing the sheet pasted under the container.
6.The electrolytic capacitor is similar to that of________
a) Oil capacitor
b) Ceramic capacitor
c) Mica capacitor
d) Paper capacitor
View Answer
Explanation: The electrolyte capacitor is constructed similar to that of the paper capacitor. The positive terminal is aluminium container and that is covered by very thin film of oxide which acts as a dielectric.
7.The dry electrolytic capacitor has the disadvantage of_______
a) Polarized electrolyte
b) Unpolarized electrolyte
c) Leakage
d) Damage
View Answer
Explanation: The dry electrolytic capacitor has two main disadvantages. They are polarized electrolyte and the other is low leakage resistance. It means the negative terminal is accidentally connected to the positive terminal that lead to change of capacitor to conductor.
8. Oil capacitors are used in_______
a) Low power equipment
b) High power equipment
c) Liquid equipments
d) High temperature required equipments
View Answer
Explanation: In high power equipment, oil capacitors are used. It is nothing but a paper capacitor that is immersed in the oil. Many capacitors will use the oil in addition to other dielectric material and in this capacitor self healing is seen.
9. What is the tolerance for silver?
a) 5%(+ or -)
b) 10%(+ or -)
c) 20%(+ or -)
d) 25%(+ or -)
View Answer
Explanation: The tolerance of the silver is 10%. The sign is according to the condition of the circuit. The tolerance can be identified by observing the colour on the capacitor. The tolerance of the gold is 20%(+ or -).
10. What is the multiplier of the black?
a) 1
b) 10
c) 100
d) 1000
AView Answer
Explanation: The multiplier of the black is 1. The multiplier is also identified by the colour at the third place on the capacitor. It is multiplied with the first and second colour code values and finally tolerance is subtracted or added to know the value of the capacitance of capacitor.
Sanfoundry Global Education & Learning Series – Basic Electronics Engineering.
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