| 1. | While testing a capacitor with ohmmetre, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor ? | |
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short-circuited
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open circuited
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alright
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leaky
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Report Question| 2. | . ...... capacitors are used in transistor circuits ? | |
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Ceramic
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Air
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Paper
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Electrolytic
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| 3. | The time constant and R-C circuit may also be defined. as the time during which the charging current falls to ...... percent of its initial maximum value ? | |
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37
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42
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63
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78
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| 4. | ln a capacitor, the electric charge is stored in ? | |
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metal plates
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dielectric
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dielectric as well as metal plates
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none of the above
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| 5. | .......capacitors are used for audio frequency and radio frequency coupling and tuning ? | |
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Air
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Mica
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Plastic film
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Ceramic
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| 6. | The power dissipated in a pure capacitor is ? | |
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zero
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proportional to applied voltage
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proportional to value of capacitance
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both (b) and (c) above
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| 7. | Which of the following capacitor has relatively shorter shelf life ? | |
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Mica capacitor
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Electrolytic capacitor
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Ceramic capacitor
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Paper capacitor
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| 8. | Electric field intensity is a ...... quantity ? | |
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scalar
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vector
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both (a) and (b)
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none of the above
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| 9. | When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of ? | |
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2 joules
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4 joules
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6 joules
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8 joules
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| 10. | In a concentric cable capacitor the diameters of the inner and outer cylinders are 3 and 10 mm respectively. It Er for insulation is 3, find its capacitance per metre ? | |
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100 pF
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110 pF
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118.8 pF
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138.8 pF
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