| 1. | The dielectric constant (relative permittivity) of glass is given by ? | |
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0.1 to 0.4
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0.5 to 1.0
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2.0 to 4.0
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5 to 100
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Report Question| 2. | The capacity of capacitor bank used in power factor correction is expressed in terms of ? | |
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kW
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kVA
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kVAR
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volts
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| 3. | A paper capacitor is usually available in the form of ? | |
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tubes
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rolled foil
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disc
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meshed plates
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| 4. | A capacitor consists of ? | |
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two insulators separated by a conductor
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two conductors separated by an insulator
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two insulators only
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two conductors only
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| 5. | Which of the following statements is incorrect ? | |
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The leakage resistance of ceramic capacitors is generally high
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The stored energy in a capacitor decreases with reduction in value of capacitance
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The stored energy in a capacitor increases with applied voltage
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A wire cable has distributed capacitance between the conductors
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| 6. | Electric field inside a hollow metallic charged sphere is ? | |
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increasing towards centre
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decreasing towards centre
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zero
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none of the above
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| 7. | If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because ? | |
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varying voltage produces the charging and discharging currents
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of high peak value
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charging current can flow
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discharge current can flow
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| 8. | Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them ? | |
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all in series
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all in parallel
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two in parallel and third in series with this combination
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two in series and third in parallel across this combination
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| 9. | The relative permittivity of free space is given by ? | |
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1
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10
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100
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1000
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| 10. | A capacitor of 80 ?F is charged to a p.d of 250 V. The charge acquired by it is ? | |
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0.02 C
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0.2 C
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0.3.C
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0.4 C
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