Question is ⇒ Large capacity generators are invariably, Options are ⇒ (A) water cooled, (B) natural air cooled, (C) forced air cooled, (D) hydrogen cooled, (E) , Leave your comments or Download question paper.

Question is ⇒ Large capacity generators are invariably, Options are ⇒ (A) water cooled, (B) natural air cooled, (C) forced air cooled, (D) hydrogen cooled, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Large capacity generators are invariably
A.	water cooled [Wrong Answer]
B.	natural air cooled [Wrong Answer]
C.	forced air cooled [Wrong Answer]
D.	hydrogen cooled [Correct Answer]
View Answer 6 -1 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Power generation cost reduces as
diversity factor increases and load factor decreases
diversity factor decreases and load factor increases
both diversity factor as well as load factor decrease
both diversity factor as well as load factor increase

⇒ Load curve helps in deciding
total installed capacity of the plant
sizes of the generating units
operating schedule of generating units
all of the above

⇒ High load factor indicates
cost of generation per unit power is increased
total plant capacity is utilised for most of the time
total plant capacity is not properly utilised for most of the time
none of the above

⇒ In two part tariff, variation in load factor will affect
fixed charges
operating or running charges
both (a) and (b)
either (a) or (b)

⇒ The effect of electric shock on human body depends on which of the following
current
voltage
duration of contact
all of the above

⇒ Load shedding is possible through which of the following ?
Switching of the loads
Frequency reduction
Voltage reduction
Any of the above

⇒ Which of the following is the disadvantage of static capacitor for power factor improvement ?
Easily damaged by high voltage
Cannot be repaired
Short service life
All of the above

⇒ Most efficient plants are normally used as
peak load plants
base load plants
either (a) or (b)
none of the above

⇒ Which of the following equipment provides fluctuating load ?
Exhaust fan
Lathe machine
Welding transformer
All of the above

⇒ When a plant resorts to load shedding it can be concluted that
peak demand is more than the installed capacity
daily load factor is unity
diversity factor is zero
plant is under repairs

⇒ In ____ fuel transportation cost is least.
nuclear power plants
diesel generating plants
steam power stations

⇒ Maximum demand tariff is generally not applied to domestic consumers because
they consume less power
their load factor is low
their maximum demand is low
none of the above

⇒ Annual operating expenditure of a power plant consists of
fixed charges
semi-fixed charges
running charges
all of the above

⇒ Which of the following is an advantage of static capacitor for power factor improvement ?
Little maintenance cost
Ease in installation
Low losses
All of the above

⇒ Generating capacity connected to the bus bars and ready to take load when switched on is known as ____
firm power
cold reserve
hot reserve
spinning reserve

⇒ A 130 MW generator is usually ____ cooled
air
oxygen
nitrogen
hydrogen

⇒ For which of the following power plants highly skilled engineers are required for running the plants ?
Nuclear power plants
Gas turbine power plants
Solar power plants
Hydro-electric power plants

⇒ For any type of consumer the ideal tariff is
two part tariff
three part tariff
block rate tariff
any of the above

⇒ ____ power plant is expected to have the longest life.
Steam
Diesel
Hydroelectric
Any of the above

⇒ A pilot exciter is provided on generators for which of the following reasons ?
To excite the poles of main exciter
To provide requisite starting torque to main exciter
To provide requisite starting torque to generator
None of the above

⇒ For a consumer the most economical power factor is generally
0.5 lagging
0.5 leading
0.95 lagging
0.95 leading

⇒ For a diesel generating station the useful life is expected to be around
15 to 20 years
20 to 50 years
50 to 75 years
75 to 100 years

⇒ Submarines for under water movement, are powered by which of the following ?
Steam accumulators
Air motors
Diesel engines
Batteries

⇒ Which of the following is not a method for estimating depreciation charges ?
Sinking fund method
Straight line method
Diminishing value method
Halsey's 50-50 formula

⇒ Major share ofpower produced in India is through
diesel power plants
hydroelectric power plants
thermal power plants
nuclear power plants

⇒ A consumer has to pay lesser fixed charges in
flat rate tariff
two part tariff
maximum demand tariff
any of the above

⇒ In an interconnected system, the diversity factor of the whole system
remains unchanged
decreases
increases
none of the above

⇒ The depreciation charges in diminishing value method are
light in early years
heavy in early years
heavy in later years
same in all years

⇒ An alternator coupled to a ____ runs at slow speed, as compared to as compared to others
diesel engine
hydraulic turbine
steam turbine
gas turbine

⇒ Generators for peak load plants are usually designed for maximum efficiency at
25 to 50 percent full load
50 to 75 percent full load
full load
25 percent overload