Electrical Engineering MCQs

Page No. 218

Aphasoris________?


aa line which represents the magnitude and phase of an alternating quantity

✓


ba line representing the magnitude and direction of an alternating quantity

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c a coloured tag or band for distinction between different phases of a 3-phase supply

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dan instrument used for measuring phases of an unbalanced 3-phase load

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Capacitive susceptance is a measure of__________?


areactive power in a circuit

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bthe extent of neutralisation of reactive power in a circuit

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c a purely capacitive circuit’s ability to pass current

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d a purely capacitive circuit’s ability to resist the flow of current

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What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value________ ?


a 0°

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b45°

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c 90°

✓


d180°

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View Answer 90°

In a parallel R-C circuit, the current always________the applied voltage?


alags

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b leads

✓


c remains in phase with

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d none of the above

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View Answer leads

Which of the following refers to a parallel circuit ?


aThe current through each element is same

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bThe voltage across element is in proportion to it’s resistance value

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cThe equivalent resistance is greater than any one of the resistors

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dThe current through any one element is less than the source current

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In a sine wave the slope is constant_______?


abetween 0° and 90°

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bbetween 90° and 180°

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cbetween 180° and 270°

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d no where

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View Answer no where

In an A.C. circuit power is dissipated in____________?


aresistance only

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binductance only

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ccapacitance only

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dnone of the above

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View Answer resistance only

Skin effect occurs when a conductor carries current at_______ frequencies


avery low

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blow

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cmedium

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dhigh

✓


View Answer high

The power is measured in terms of decibles in case of_________?


aelectronic equipment

✓


b transformers

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ccurrent transformers

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d auto transformers

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View Answer electronic equipment

At _______ frequencies the parallel R-L circuit behaves as purely resistive


alow

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bvery low

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c high

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d very high

✓


View Answer very high

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