Transformer oil used in the Transformer provides: Cooling Insulation Both of these None of these Correct answer: 3. Both of these Explanation: Study MCQs on Transformer here Basic Electrical Laws and Theorems Basic Voltage and Current MCQs High Voltage Engineering MCQs Induction Motor MCQs Power Electronics Power Distribution MCQs Power Generation MCQs Power System Protection … Read more
In an ideal transformer the no-load primary current: Lags Vp by an angle between 0° and 90° Leads Vp by 90° Lags behind Vp by 90° Is in phase with Vp None of above Correct answer: 3. Lags behind Vp by 90° Explanation: The coil of an ideal transformer is purely inductive. For a purely … Read more
Permeability is reciprocal of: Conductivity Permittivity Susceptibility Reluctivity Correct answer: 4. Reluctivity Explanation: Electrical Engineering MCQs: Basic Electrical Laws and Theorems Basic Voltage and Current MCQs High Voltage Engineering MCQs Induction Motor MCQs Power Electronics Power Distribution MCQs Power Generation MCQs Power System Protection MCQs Synchronous Generator MCQs Synchronous motor MCQs Transformer MCQs
An ideal voltage source should have: Zero source resistance High source resistance Infinite source resistance None of these Correct answer: An ideal voltage source should have Zero source or internal resistance. Explanation: More Electrical Engineering MCQs: Basic Electrical Laws and Theorems Basic Voltage and Current MCQs High Voltage Engineering MCQs Induction Motor MCQs Power Electronics … Read more
Value of Form factor for DC supply voltage is always: Zero Between 5 to 10 Infinity Unity Correct answer: 4. Unity Explanation: Basic Electrical Engineering MCQs Basic Electrical Laws and Theorems Basic Voltage and Current MCQs High Voltage Engineering MCQs Induction Motor MCQs Power Electronics Power Distribution MCQs Power Generation MCQs Power System Protection MCQs … Read more
Temperature coefficient of resistance of given conductor is defined as: Increase in resistance per °C Increase in resistance per ohm per °C Decrease in resistance per °C None of these Correct answer: 2. Increase in resistance per ohm per °C Explanation: More Electrical Engineering MCQs Basic Electrical Laws and Theorems Basic Voltage and Current MCQs … Read more
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: 0.2 times 1 time 5 times Insufficient data Correct answer: 3. 5 times Explanation: … Read more
Proximity effect is due to current flowing in the: Sheath Earth Neighboring conductor All of these Correct answer: 3. Neighboring conductor Explanation: Also Read: 5 Types of Conductors used in transmission lines 3 Different Types of Transmission Lines on the Basis of Length Electrical power transmission MCQs More Electrical Engineering MCQs
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 Read: 5 Types of Conductors used in transmission lines 3 Different Types of Transmission Lines on the Basis of Length Electrical power transmission MCQs More Electrical Engineering MCQs
Causes of Low power factor are: Arc lamp loads Induction motors Presence of harmonic currents All of above Correct answer: 4. All of above Explanation: More Electrical Engineering MCQs You might be interested in: Power Distribution MCQs Power Generation MCQs Power System Protection MCQs Synchronous Generator MCQs Synchronous motor MCQs Transformer MCQs