Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 341 to 350 out of 425 Questions
32 33 34 35 36 37
341.
The annual coat of generation in form of Rs. (A + B×kW + C×kWh) where A, B and C are constants and kW and kWh represents capacity of the station and energy generated per year respectively. The choice between base load station and peak load station basically depends on the fact that
(a) Factor B should be less for peak load station and factor C should be less for base load station
(b) Factor C should be less for peak load station and factor B should be less for base load station
(c) Factor B and C should be less for base load station
(d) Factor B and C should be less for peak load station
Answer:

Option (a)

342.
The modern trends in electric power generation is
(a) To have large number of small size thermal plants located at different places
(b) To have large size thermal plants near load centre
(c) To have large size thermal plants located near coal fields
(d) None of above
Answer:

Option (b)

343.
Which of the following are the advantages of interconnected operations power systems?
1. Less reserve capacity requirement
2. More reliability
3. High power factor
4. Reduction in short circuit level
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
Answer:

Option (a)

344.
Inter connected systems have the advantages of
(a) Reduced reserve plant capacity, capital cost per kW and economy in operation
(b) Improved load factor, diversity factor and operation efficiency and increased reliability of supply
(c) All of above
(d) None of above
Answer:

Option (c)

345.
The interconnected system has following power plants
1. Nuclear
2. Steam
3. Diesel
4. Gas turbine
5. Hydro with storage
6. Run off the river
7. Pumped storage
Which of the above three power plants are used exclusively for supplying peak loads?
(a) 1, 2, 3
(b) 3, 4, 7
(c) 4, 5, 6
(d) 2, 3, 5
Answer:

Option (b)

346.
The interconnected system has following power plants
1. Nuclear
2. Steam
3. Diesel
4. Gas turbine
5. Hydro with storage
6. Run off the river
7. Pumped storage
Which of the above two power plants are used exclusively for supplying base loads?
(a) 1 and 5
(b) 1 and 2
(c) 1 and 6
(d) 4 and 6
Answer:

Option (c)

347.
In moderate size steam power station, electric power is generated at
(a) 440 kV
(b) 1.1 kV
(c) 11 kV
(d) 33 kV
Answer:

Option (c)

348.
When an alternator is delivering a balanced load at unity power factor, the phase angle between line voltage and line current is
(a) 90°
(b) 60°
(c) 30°
(d) 0°
Answer:

Option (c)

349.
During summer season load on the system increases this is due to
(a) Increase in demand of water supply
(b) Increased the business activity
(c) Increased use of fan air coolers and air conditioners
(d) Vacations in schools and Institution
Answer:

Option (c)

350.
The connected load of domestic consumer is usually about
(a) 2 to 5 kW
(b) 10 to 20 kW
(c) 20 to 30 kW
(d) Below 1 kW
Answer:

Option (a)

Showing 341 to 350 out of 425 Questions
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