MCQs

ACSR conductors have inner conductors that are made of: Aluminum Steel Copper Silver Correct answer: 2. Steel

Steel wire in ACSR serves to: Boost the conductance Increase mechanical strength of line Increase series reactance All of these Correct answer: 4. All of these

High voltage transmission lines utilize stranded conductors due to: Ease of handling Cheaper rates Improved resistance None of these Correct answer: 1. Ease of handling

“The most economical area of conductor is that one for which the total annual cost of transmission line is minimum” Above statement is known as: Kelvin’s law Kirchhoff’s law Lenz’s law None of these Correct answer: 1. Kelvin’s law

33 kV is recommended for transmission lines having length over: 10 km 50 km 200 km 500 km Correct answer: 2. 50 km

For power transmission upto 10 km the recommended voltage level is: <20 kV 66 kV 132 kV >500 kV Correct answer: 1. <20 kV

What current flows through a 20 ohms resistor connected to 12 volt source: 0.6 Amps 1 Amps 20 Amps 240 Amps Basic Electrical Engineering MCQ#9 Explanation From Ohm’s law: I = V/R = 12 V/20 ohms = 0.6 Amps

Current Always Remains Same in: Series Parallel Correct answer: 1. Series Explanation: Current always remain the same in series, while voltage remains the same in parallel

The Correct Statement about Drift Velocity of Electrons: It equals the speed of light It is almost same as the speed of light It is ten times higher than the speed of light It is very small as compared to the speed of light Correct answer: 4. It is very small as compared to the … Read more