71. Parson's turbine is A. pressure compounded steam turbine B. simple single wheel, impulse steam turbine C. simple single wheel reaction steam turbine D. multi wheel reaction steam turbine Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
72. Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2 A. Has higher thermal efficiency than the Carnot cycle operating between same pressure limits B. Has lower thermal efficiency than Carnot cycle operating between same pressure limit C. Has same thermal efficiency as Carnot cycle operating between same pressure limits D. May be more or less depending upon the magnitude of p1 and p2 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
73. Binary vapor cycles are used to A. Increase the performance of the condenser B. Increase the efficiency of the plant C. Increase efficiency of the turbine D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
74. The value of the reheat factor is of the order of A. 0.8 to 1.0 B. 1.0 to 1.05 C. 1.1 to 1.5 D. above 1.5 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
75. Secondary air is the air used to A. reduce the flame length B. increase the flame length C. transport and dry the coal D. provide air round the burners for getting optimum combustion Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
76. The draught produced by steel chimney as compared to that produced by brick chimney for the same height is A. Less B. More C. Same D. May be more or less Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
77. Example of overfeed type stoker is A. chain grate B. spreader C. travelling grate D. all of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
78. In coal preparation plant, magnetic separators are used to remove A. Dust B. Clinkers C. Iron particles D. Sand Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
79. Steam pressure in a steam power station, which is usually kept now-a-days is of the order of A. 20 kgf/cm2 B. 50 kgf/cm2 C. 80 kgf/cm2 D. 100 kgf/cm2 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
80. The pressure at the furnace is minimum in case of A. forced draught system B. induced draught system C. balanced draught system D. natural draught system Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
