
Gas Turbine ELEMENTS
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Others
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University
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Practice Problem
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Hard
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Brayton cycle has
two isentropic and two constant volume processes
two isentropic and two constant pressure processes
one constant pressure, one constant volume, and two adiabatic processes
two isothermals, one constant volume and a constant pressure process
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Brayton cycle cannot be used in reciprocating engines even for same adiabatic compression ratio and work output because
Otto cycle is highly efficient
Brayton cycle is less efficient
Brayton cycle is for slow speed engines only
large volume of low pressure air cannot be efficiently handled in reciprocating engines
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which cycle is generally used for gas turbine?
Otto cycle
Dual cycle
Carnot cycle
Brayton cycle
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When r is the compression ratio, the efficiency of Brayton cycle is given by
1 - 1/r(k-1)/k
1 - 1/rk-1
1 - 1/rk
1 - 1/r
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A regenerator in a gas turbine
reduces heat loss during exhaust
allows use of higher compression ratio
improves thermal efficiency
allows use of fuels of inferior quality
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following compressors is generally used for gas turbines?
lobe type
centrifugal type
axial flow type
reciprocating type
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The constant pressure gas turbine works on the principle of
Carnot cycle
Bell - Coleman cycle
Rankine cycle
Brayton cycle
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