Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 401 to 410 out of 425 Questions
38 39 40 41 42 43
401.
A power plant has a maximum demand of 15 MW. Load factor is 50% and the plant factor is 40%. The operating reserve is
(a) 3 MW
(b) 3.75 MW
(c) 6 MW
(d) 7.5 MW
Answer:

Option (b)

402.
Which of the following relations holds good?
(a) Maximum demand =  connected load × Demand factor
(b) Average load =  maximum load × Load factor
(c) Capacity factor =  Utilization factor × Load factor
(d) All of above
Answer:

Option (d)

403.
Two areas A and B  have equal connected loads.  However load diversity in area A is more than in area B.Then
(a) Maximum demands of the two areas would be equal
(b) Maximum demand of area A would be more than that of area B
(c) Maximum demand of area B would be more than that of area A
(d) Maximum demand of area a may be more or less than that of area B
Answer:

Option (c)

404.
A large diversity factor of the load in a power system
(a) Reduces the installation cost
(b) Increases the installation cost
(c) Does not affect the installation cost
(d) Insufficient data
Answer:

Option (a)

405.
As the load factor of power plant increases, the cost for kWh of the energy generated
(a) Increases
(b) Decreases
(c) May increase or decrease
(d) Remains same
Answer:

Option (b)

406.
In order to have a lower cost of electrical energy generation
(a) Load factor and diversity factor should be low
(b) Load factor should be low but diversity factor should be high
(c) Load factor should be high but the diversity factor should be low
(d) Load factor and diversity factor should be high
Answer:

Option (d)

407.
In a power station, the cost of generation of power reduces most effectively when
(a) Diversity factor alone increases
(b) Both diversity factor and load increases
(c) Load factor alone increases
(d) Both diversity factor and load factor decreases
Answer:

Option (b)

408.
A region has a maximum demand of 500 MW at a load factor of 50%. The load duration curve can be assumed to be a triangular.Utility has to meet this load by setting up a generating system which has partly hydro and partly thermal. The costs are as under.
Hydro plant : Rs.600 per kW per annum plus 3p per kWh
Thermal plant : Rs.300 per kW per annum plus 13p per kWh
The respective capacity of hydro and thermal power plants for minimum cost are
(a) 330 MW and 170 MW
(b) 170 MW and 330 MW
(c) 93.75 MW and 406.25 MW
(d) 406.25 MW and 93.75 MW
Answer:

Option (a)

409.
A region has a maximum demand of 500 MW at a load factor of 50%. The load duration curve can be assumed to be a triangular.Utility has to meet this load by setting up a generating system which has partly hydro and partly thermal. The costs are as under.
Hydro plant : Rs.600 per kW per annum plus 3p per kWh
Thermal plant : Rs.300 per kW per annum plus 13p per kWh
The energy generated annually by hydro and thermal power plant for minimum cost are
(a) 1935×106 kWh and 255×106 kWh
(b) 255×106 kWh and 1935×106 kWh
(c) 187.5×106 kWh and 2002.5×106 kWh
(d) 2002.5×106 kWh and 187.5×106 kWh
Answer:

Option (a)

410.
Flat rate tariff can be charged on the basis of
(a) Connected load
(b) Units consumed
(c) Maximum demand
(d) Both (a) and (b)
Answer:

Option (b)

Showing 401 to 410 out of 425 Questions
38 39 40 41 42 43