Power Systems Objective Questions & Answers
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Which of the following effects are associated with transmission line
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A power generating station has a plant capacity of 200 MW and maximum power demand is 150 MW. If average power generation is 110 MW, then find the load factor and capacity factor respectively?
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Area under the daily curve divided by 24 gives
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The conductor carries more current on surface as compared to core. This is called as
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Corona loss is ----------------- on hilly areas than as plain areas.
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If sag in an overhead line increase, tension in the line
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Plant capacity factor value is
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A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator?
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The value of diversity factor is
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Demand factor of a plant is
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Corona is accompanied by
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In a transmission line the insulators to be used at the dead end or sharp curves are
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The value of diversity factor is
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Suspension type insulators are used for voltage beyond
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In thermal plant most of the energy is wasted in
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Which of the following is used in thermal plants
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Surge tank is kept very close to the
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Electrostatic precipitators in thermal power plants are used for
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Peak load power plants is/are
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Which of the following relationships are not valid for short transmission lines
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The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?
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For 66 kV lines the number of insulator discs of each 11 kV used are
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Which of the following is/are base load plants?
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A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage?
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The most commonly used material for insulators of overhead lines is
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Ideal plant load factor is
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What is the function of economiser in steam boilers
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By using guard ring in a transmission line, its string efficiency
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Highest pressure generating pump inside the thermal plant is
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The insulator thickness on the conductor, in cables depends upon
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