231. Gas turbine works on_______________?
A. Brayton or Atkinson cycle
B. Carnot cycle
C. Rankine cycle
D. Erricsson cycle
E. Joule cycle

232. Gas turbine works on______________?
A. Brayton or Atkinson cycle
B. Carnot cycle
C. Rankine cycle
D. Erricsson cycle
E. Joule cycle

233. Rotary compressors are suitable for ____________________?
A. large discharge at high pressure
B. low discharge at high pressure
C. large discharge at low pressure
D. low discharge at low pressure
E. there is no such limitation

234. The work ratio of a gas turbine plant is defined as the ratio of__________________?
A. net work output and heat supplied (6) net work output and work done by tur┬Čbine
C. actual heat drop and isentropic heat drop
D. net work output and isentropic heat drop
E. isentropic increase/drop in temperature and actual increase/ drop in temperature

235. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is_______________?
A. low
B. high
C. same
D. low/high depending on make and type
E. unpredictable

236. The fuel consumption in gas turbines is accounted for by___________________?
A. low.er heating value
B. higher heating value
C. heating value
D. higher calorific value
E. highest calorific value

237. Mechanical efficiency of gas turbines as compared to I.C engines is____________________?
A. higher
B. lower
C. same
D. depends on on odier considerations
E. unpredictable

238. The air-fuel ratio in gas turbines is of the order of ______________________?
A. 7 : 1
B. 15 : 1
C. 30 : 1
D. 40 : 1
E. 50: 1

239. Gas turbine blades are given a rake___________________?
A. equal to zero
B. in the direction of motion of blades
C. opposite to the direction of motion of blades
D. depending on the velocity
E. none of the above

240. The thermal efficiency of a gas turbine as compared to a diesel plant is__________________?
A. same
B. more
C. less
D. depends on other factors
E. unpredictably

NOTE
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