| 1. | A resistance of 75 Ohms is connected in shunt of a galvanometer, having an internal resistance of 25 Ohms, to convert it into an ammeter. What is the value of current (in A) flowing through the galvanometer, if the total current in the circuit is 5 A ? | |
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2
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2.5
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3.65
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3.75
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Report Question| 2. | Which of the following is TRUE about analog multimeter ? | |
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It is a type of absolute instrument.
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It is a type of indicating instrument.
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It is a type of recording instrument.
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It is a type of integrating instrument.
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| 3. | Which of the following materials when used as the viewing surface of a CRO gives a reddish glow ? | |
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Zinc Sulfide with copper as impurity
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Zinc Sulfide with silver as impurity
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Yttrium Oxide
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Pure Zinc Sulfide
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| 4. | Which of the following is TRUE about current transformers ? | |
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It decreases the range of AC ammeter.
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It decreases the range of DC ammeter.
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It increases the range of AC ammeter.
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It increases the range of DC ammeter.
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| 5. | Which of the following produces breaking torque in induction type energy meter ? | |
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Air Dampers
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Eddy current
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Spring
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Gravity
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| 6. | Which of the following can be used to measure frequency ? | |
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Anderson's Bridge
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De-Sauty’s Bridge
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Owen's Bridge
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Wien's Bridge
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| 7. | The loss associated with the mechanical friction of a machine are called ? | |
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eddy current loss
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mechanical loss
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stray load loss
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hysterisis loss
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| 8. | For a 3-phase load balanced condition, each phase has the same value of ? | |
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impedance.
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resistance.
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power factor.
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all options are correct
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| 9. | A short circuit test on a transformer gives ? | |
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copper loss at full load
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copper loss at any load
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copper loss at half load
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copper loss at over load
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| 10. | Armature reaction effect causes flux to reduce with ? | |
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decreasing torque
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increasing torque
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increase current
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both increasing torque & increase current
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