61. For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is
(a) 1 kg
(b) 4/3kg
(c) 8/3kg
(d) 2 kg
(e) 16/3 kg.
Ans: b
62. The diameter of Cornish boiler is of the order of
(a) 1-2 m
(b) 1.5-2.5 m
(c) 2-3 m
(d) 2.5-3.5 m
(e) 0.5 to 1 m.
Ans: a
63. The length of Cornish boiler is of the order of
(a) 2-4 m
(b) 3-5 m
(c) 5-7.5 m
(d) 7-9 m
(e) 9-11 m.
Ans: c
64. The diameter of fire tube of Cornish boiler compared to its shell is
(a) one half
(b) one third
(c) one-fifth
(d) two-fifth
(e) three-fifth.
Ans: a
65. Steam engine operates on
(a) carnot cycle
(b) joule cycle
(c) Stirling cycle
(d) brayton cycle
(e) none of the above.
Ans: d
66. The change in internal energy in steam engines equals to
(a) work done during the rankine cycle ;
(b) work done during compression.
(c) work done during adiabatic expansion
(d) change in enthalpy
(e) none of the above.
Ans: a
67. Water tube boilers are those in which
(a) flue gases pass through tubes and water around it
(b) water passes through the tubes and flue gases around it
(c) work is done during adiabatic expansion
(d) change in enthalpy
(e) none of the above.
Ans: c
68. Locomotive type' boiler is
(a) horizontal multitubular water tube boiler
(b) water wall enclosed furnace type
(c) vertical tubular fire tube type
(d) horizontal multi-tubular fire tube type
(e) none of the above types.
Ans: d
69. Lancashire boiler is of
(a) stationary fire tube-type
(b) horizontal type
(c) natural circulation type
(d) internally fired type
(e) all of the above.
Ans: e
70. Fire tube boilers are those in which
(a) flue gases pass through tubes and water around it
(b) water passes through the tubes and flue gases around it
(c) forced circulation takes place
(d) tubes are laid vertically
(e) none of the above.
Ans: a
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(a) 1 kg
(b) 4/3kg
(c) 8/3kg
(d) 2 kg
(e) 16/3 kg.
Ans: b
62. The diameter of Cornish boiler is of the order of
(a) 1-2 m
(b) 1.5-2.5 m
(c) 2-3 m
(d) 2.5-3.5 m
(e) 0.5 to 1 m.
Ans: a
63. The length of Cornish boiler is of the order of
(a) 2-4 m
(b) 3-5 m
(c) 5-7.5 m
(d) 7-9 m
(e) 9-11 m.
Ans: c
64. The diameter of fire tube of Cornish boiler compared to its shell is
(a) one half
(b) one third
(c) one-fifth
(d) two-fifth
(e) three-fifth.
Ans: a
65. Steam engine operates on
(a) carnot cycle
(b) joule cycle
(c) Stirling cycle
(d) brayton cycle
(e) none of the above.
Ans: d
66. The change in internal energy in steam engines equals to
(a) work done during the rankine cycle ;
(b) work done during compression.
(c) work done during adiabatic expansion
(d) change in enthalpy
(e) none of the above.
Ans: a
67. Water tube boilers are those in which
(a) flue gases pass through tubes and water around it
(b) water passes through the tubes and flue gases around it
(c) work is done during adiabatic expansion
(d) change in enthalpy
(e) none of the above.
Ans: c
68. Locomotive type' boiler is
(a) horizontal multitubular water tube boiler
(b) water wall enclosed furnace type
(c) vertical tubular fire tube type
(d) horizontal multi-tubular fire tube type
(e) none of the above types.
Ans: d
69. Lancashire boiler is of
(a) stationary fire tube-type
(b) horizontal type
(c) natural circulation type
(d) internally fired type
(e) all of the above.
Ans: e
70. Fire tube boilers are those in which
(a) flue gases pass through tubes and water around it
(b) water passes through the tubes and flue gases around it
(c) forced circulation takes place
(d) tubes are laid vertically
(e) none of the above.
Ans: a
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