Generating Power Stations

Question 1
Base load power plants are

P: wind farms.
Q: run-of-river plants.
R: nuclear power plants.
S: diesel power plants.
A
P, Q and S only
B
P, R and S only
C
P, Q and R only
D
Q and R only
GATE EE 2015-SET-1   Power Systems
Question 2
Out of the following plant categories

(i) Nuclear
(ii) Run-of-river
(iii) Pump Storage
(iv) Diesel
The base load power plant are
A
(i) and (ii)
B
(ii) and (iii)
C
(i), (ii) and (iv)
D
(i), (iii) and (iv)
GATE EE 2009   Power Systems
Question 2 Explanation: 
Pumped storage plants and diesel stations supply power during peak loads.
NOTE: Base load-plant
(i) Low operating cost
(ii) Capability of working continuously long period.
Question 3
For harnessing low variable waterheads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is
A
Kaplan
B
Francis
C
Pelton
D
Impeller
GATE EE 2004   Power Systems
Question 3 Explanation: 
Kaplan is used for run-of-river and poundage stations with heads of upto 70 m (low head). This type has an axial-flow rotor with variable-pitch blades.
Question 4
In the thermal power plants, the pressure in the working fluid cycle is developed by
A
condenser
B
super heater
C
feed water pump
D
turbine
GATE EE 2004   Power Systems
Question 4 Explanation: 
NOTE:
Condenser : The function of condenser are
(i) To provide vaccum at outlet of steam turbine.
(ii) To condense the steam ams pass on the condensate to boiler feed.
Super heater is a device used to convert saturated steam or wet steam into dry steam used for power generation process.
There are 4 questions to complete.
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