Question is ⇒ A 130 MW generator is usually ____ cooled, Options are ⇒ (A) air, (B) oxygen, (C) nitrogen, (D) hydrogen, (E) , Leave your comments or Download question paper.

Question is ⇒ A 130 MW generator is usually ____ cooled, Options are ⇒ (A) air, (B) oxygen, (C) nitrogen, (D) hydrogen, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A 130 MW generator is usually ____ cooled
A.	air [Wrong Answer]
B.	oxygen [Wrong Answer]
C.	nitrogen [Wrong Answer]
D.	hydrogen [Correct Answer]
View Answer 4 -5 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 :

⇒ 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

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

⇒ Load factor of a power station is defined as
maximum demand/average load
average load X maximum demand
average load/maximum demand
(average load X maximum demand)^1/2

⇒ The area under a load curve gives
average demand
energy consumed
raaximum demand
none of the above

⇒ Which plant can never have 100 percent load factor ?
Peak load plant
Base load plant
Nuclear power plant
Hydro electric plant

⇒ Load curve of a power plant has always
zero slope
positive slope
negative slope
any combination of (a), (b) and (c)

⇒ 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

⇒ A load curve indicates
average power used during the period
average kWh (kW) energy consumption during the period
either of the above
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

⇒ Large capacity generators are invariably
water cooled
natural air cooled
forced air cooled
hydrogen cooled

⇒ For cooling of large size generators hydrogen is used because
it is light
it offers reduced fire risk
it has high thermal conductivity
all of the above

⇒ Salvage value of the plant is always
positive
negative
zero
any of the above

⇒ In a load curve the highest point represents
peak demand
average demand
diversified demand
none of the above

⇒ Direct conversion of heat into electrical energy is possible through
fuel cells
solar cells
MHD generators
none of the above

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

⇒ The knowledge of diversity factor helps in determining
plant capacity
average load
peak load
kWh generated

⇒ A power transformer is usually rated in
kW
kVAR
kWh
kVA

⇒ 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

⇒ Approximate estimation of power demand can be made by
load survey method
statistical methods
mathematical method
economic parameters

⇒ When the demand of consumers is not met by a power plant, it will resort to which of the following ?
Load shedding
Power factor improvement at the generators
Penalising high load consumers by increasing the charges for electricity
Efficient plant operation

⇒ With reference to a power station which of the following is not a fixed cost ?
Fuel cost
Interest on capital
Insurance charges
Depreciation

⇒ ____ is invariably used as base load plant.
Diesel engine plant
Nuclear power plant
Gas turbine plant
Pumped storage plant

⇒ Diversity factor has direct effect on the
fixed cost, of unit generated
running cost of unit generated
both (a) and (b)
neither (a) nor (b)

⇒ Which of the following is the disadvantage of a synchronous condenser ?
High maintenance cost
Continuous losses in motor
Noise
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

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

⇒ In Hopknison demand rate or two part tariff the demand rate or fixed charges are
dependent upon the energy consumed
dependent upon the maximum demand of the consumer
both (a) and (b)
neither (a) nor (b)

⇒ By the use of which of the following power factor can be improved ?
Phase advancers
Synchronous compensators
Static capacitors
Any of the above

⇒ ____ can generate power at unpredictable or uncontrolled times.
Solar power plant
Tidal power plant
Wind power plant
Any of the above

⇒ Which of the following devices may be used to provide protection against lightening over voltages ?
Horn gaps
Rod gaps
Surge absorbers
All of the above