Transformer oil used in Transformer provides
Transformer oil used in the Transformer provides: Cooling Insulation Both of these None of these Correct answer: 3. Both of
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Electrical Engineering Mcqs
Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
In an ideal transformer the no-load primary current
In an ideal transformer the no-load primary current: Lags Vp by an angle between 0° and 90° Leads Vp by
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Permeability is reciprocal of – MCQ
Permeability is reciprocal of: Conductivity Permittivity Susceptibility Reluctivity Correct answer: 4. Reluctivity Explanation: Electrical Engineering MCQs: Basic Electrical Laws and
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An ideal voltage source should have
An ideal voltage source should have: Zero source resistance High source resistance Infinite source resistance None of these Correct answer:
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Value of Form factor for DC supply voltage is always
Value of Form factor for DC supply voltage is always: Zero Between 5 to 10 Infinity Unity Correct answer: 4.
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Temperature coefficient of resistance of given conductor is defined as
Temperature coefficient of resistance of given conductor is defined as: Increase in resistance per °C Increase in resistance per ohm
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Two wires A and B have same cross section and are made of same material. Resistance of wire A is 500 Ω and Resistance of wire B is 100 Ω. The number of times wire A is longer than B is
Two wires A and B have same cross section and are made of same material. Resistance of wire A is
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Proximity effect is due to current flowing in the
Proximity effect is due to current flowing in the: Sheath Earth Neighboring conductor All of these Correct answer: 3. Neighboring
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Surge impedance of a lossless transmission line is given by
Surge impedance of a lossless transmission line is given by: √LC √(L/C) 1/√LC 1/√(L/C) Correct answer: 2. √(L/C) Explanation: Also
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Causes of Low power factor are
Causes of Low power factor are: Arc lamp loads Induction motors Presence of harmonic currents All of above Correct answer:
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