Transmission & Distribution In a 3- phase balanced load, each phase has Same impedance and p. f. None of the listed here Same p. f. But different impedance Same impedance but different p. f Same impedance and p. f. None of the listed here Same p. f. But different impedance Same impedance but different p. f ANSWER DOWNLOAD EXAMIANS APP
Transmission & Distribution Power distribution by cables is generally adopted for line length Above 100 km Above 200 km Less than 50 km Less than 10 km Above 100 km Above 200 km Less than 50 km Less than 10 km ANSWER DOWNLOAD EXAMIANS APP
Transmission & Distribution As a rough guide, the most economical transmission voltage is _____of the length of the line. 3.2kV/km 3 kV/km 1.6 kV/km 2kV/km 3.2kV/km 3 kV/km 1.6 kV/km 2kV/km ANSWER DOWNLOAD EXAMIANS APP
Transmission & Distribution If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as Kelvin's law Kirchhoff's law Faraday's law Ohm's law Kelvin's law Kirchhoff's law Faraday's law Ohm's law ANSWER DOWNLOAD EXAMIANS APP
Transmission & Distribution For transmission of power over a distance of 500 km, the transmission voltage should be in the range 20 to 50 kV 100 to 120 kV 150 to 220 kV 60 to 100 kV 20 to 50 kV 100 to 120 kV 150 to 220 kV 60 to 100 kV ANSWER DOWNLOAD EXAMIANS APP
Transmission & Distribution As the thickness of the insulation of a cable increases, its capacitance Decreases Remains same Increases None of the listed here Decreases Remains same Increases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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