1. In general the change in entropy during a non-flow process of a gas is calculated as
2. Change in entropy will be zero in case of
3. Air cycle is a
4. Which among the following efficiencies of a Heat engine is highest?
5. For the same compression ratio, air standard efficiency of which air cycle is more?
6. Which type of energy conversion is dealt with in Thermodynamics:
7. Which is an example of a closed System?
8. Which is an extrinsic property of a thermodynamic system?
9. Which is the true indicator of level of thermal energy contained in a system?
10. Which is not a unit of pressure?
11. Which is a path function?
12. Which of the following is transit Energy?
13. Units of Energy in S.I. system of units are
14. When there is no mass flow rate across the boundaries of system, which energy of system is considered as zero?
15. One kcal of heat energy is equivalent to how much work energy?
16. The statement that pressure of a gas is inversely proportional to its volume while remaining at constant temperature is connected to which law:
17. Laws of perfect gases are applicable to
18. Value of universal gas constant in S.I. system of units is
19. Characteristic gas constant (R) of a gas can be calculated from universal gas constant (Ru) by
20. Equation of state of a perfect gas is given as
21. Mathematical statement of First law of thermodynamics as applicable to a thermodynamic cycle is
22. Which is not a property of the thermodynamic system?
23. During which non-flow process, heat exchange is same as change in internal energy of the system?
24. During which non-flow process, heat exchange is same as change in enthalpy of the system?
25. Relationship between CP, CV and R is
26.
If during a non-flow process, PV? = constant, the heat exchange during process is
27.
The slope of which process line drawn on P-V chart is least?
28. If during the non-flow process, PVn = Constant and n??, the heat exchange during process is
29. Which process line is horizontal on a pressure volume diagram
30. The value of specific heat at constant pressure of a gas means
31.
Which statement is wrong?
32.
Thermal Efficiency of Carnot Engine operating between temperatures Th & TC is given by
33.
Which statement is true for an irreversible cycle?
34.
During a reversible process, if there is no exchange of heat i.e. Q=0, entropy will
35. Efficiency of Carnot Engine may become 100%, if
36. The primary source of pathogenic microorganisms in milk is
37. Milk contains an important fatty acid not synthesized by humans
38. The microorganism responsible for the spread of mastitis among herd is
39. The most common aerobic spores of genus Bacillus not found in milk
40. Personal hygiene of animal handlers means
41. The following practices will be routinely employed to get high quality milk
42. Molecular techniques used to classify microorganisms on the basis of phylogenetic relationships are
43. Enzyme that converts pyruvate to lactate is called
44. The mold generally used fro the preparation of blue veined cheeses is
45. Bacteriophages are the
46. Psychrotrophs are the microorganisms capable of growing
47. The two predominant psychrotrophic pathogens found in milk products are
48. During an irreversible process, if there is no exchange of heat i.e. Q = 0, Entropy will
49. An enclosed area on T-S chart gives as
50. When there is finite difference in temperature of heat source and working substance, then
51. When the temperature of heat source decreases due to the supply of heat, then
52. Compression Ratio, ‘r’ means
53. Air Standard efficiency of an air cycle________________ with increase in value of compression ratio
54. Air standard efficiency of dual combustion cycle is
55. Dual combustion Cycle is theoretical cycle for
56. Cut-off Ratio mean
57. The index of compression & expansion processes of an ‘air cycle’ is equal to
58. Compression Ratio ‘r’ of a dual combustion Cycle is
59. Internal Combustion (I.C.) Engine is a
60. Petrol Engine used in a car is
61. The sequence of strokes in a 4S, S.I. engine are
62. Inlet valve is closed __________ reaching of piston at BDC
63. Which two processes of a 4-S Diesel Engine are different or extra than that of a diesel cycle?
64. Compression Ratio in a C.I. engine is in the range of
65. Power to weight ratio of which type of I.C. Engine is less
66. Function of fuel injection system in a C.I. engine is
67. During which stroke of piston, inlet and outlet valves remain closed
68. Diesel Engine is more fuel efficient than a petrol engine because of
69. Revolution per minute (r.p.m.) of camshaft with respect to r.p.m. of crankshaft in a 4-Stroke I.C. Engine will be
70. Connecting Rod is hinged to piston with the help of
71. In a 100 C.C. bike engine, 100 C.C. is what
72. Valve remains seated on the valve seat firmly with the force of
73. Energy is stored in the flywheel during power stroke in the form of
74. Pressure in the venturi of a simple carburetor is
75. Quantity of fuel injected in case of electronic fuel injection is controlled by controlling
76. In the electronic fuel injection system of a Petrol engine, fuel injector injects the fuel in
77. Pressure of Diesel Maintained in Common Rail Diesel Injection System is the order of
78. In case of Petrol Engine, speed of engine is regulated by
79. Which Port is opened first? while piston is moving from TDC to BDC
80. Transferport and exhaust port are opened and closed by
81. Specificpower output of which type of engine is highest?
82. Thermal efficiency of 2-S engine is less as compared to a 4-S engine, because of
83. Pressure of gases in the cylinder during scavenging process is
84. Among the different types of powers of an engine which is highest
85. Ratio of net power output to rate of heat energy produced by burning of fuel is called
86. Stoichiometric fuel air ratio means
87. Among the given choices indicating torque produced at some given rpm of different engines, power of which is more
88. Which one is real indicator for comparison of power of two engines
89. Among the given liquid fuels, which one is separated first of all from petroleum?
90. Which constituent of burnt gases is most harmful and poisonous?
91. Which one is naturally available coal?
92. For engineering calculations, air composition by weight is taken as
93. In a chemical (hydrocarbon) fuel which constituent has highest percentage by mass?
94. What is the function of a bomb colorimeter?
95. Which of the following statement is incorrect?
96. Atomization is used in which type of fuel?
97. For measuring the calorific value of a gaseous fuel
98. Preheating of oil is done before an oil burner to
99. With the increase in saturation temperature of water, its latent heat of evaporation will
100. Among the following types of steam at same pressure, enthalpy of which is more?
101. Specific volume of ________ increases with increase in value of its saturation temperature
102. For saturated water, the value of dryness fraction ‘x’ will be
103. Steam becomes superheated, when
104. Above what limit of steam pressure, boilers are called as high pressure boilers?
105. Among fire tube and water tube boilers, thermal efficiency of which type of boiler is higher?
106. The layer of deposits of water salts and foreign particles on the heating surface in a boiler is called
107. If equivalent evaporation of a boiler is more, its bhp will also be__________
108. One boiler horse power means
109. A device fitted on the crown plate of fire box and used to prevent damage of heating surface in case of low water level is
110. Boiler mounting used for start or stop of steam flow from boiler is
111. Which one is not utilizing the heat of outgoing flue gases?
112. Which of the following is a boiler accessory?
113. Which device is used to raise the pressure of feed water before entering the boiler shell?
114. Which agency is responsible for promoting uniform enforcement of boiler and pressure vessel laws and rules
115. Routine Inspection of boiler is done by Boiler Inspector
116. The job of Boiler and Pressure Vessel Committee is
117. Boiler and Pressure Vessel Code considers the following
118. The boiler code contains rules to cover all the details of design and construction of boilers which the manufactures has to follow strictly without using any of his
119. Which is not used as material of steam pipes?
120. Branch line is connected to steam main
121. Condensate generated in steam lines flow towards the condensate outlet with the help of
122. Steam trap is used to
123. Insulation of steam lines is more effective
124. Natural draught may be produced by
125. The draught produced by a steam jet directed towards chimney of boiler is called
126. Which draught will be most effective?
127. Which draught is most unsafe in case of leakage in flue passages?
128. By use of Mechanical Draught, efficiency of boiler
129. Natural Draught is created by
130. Maximum draught produced by a chimney is
131. Value of natural draught will ______________with increase in temperature of exhaust gases
132. Maximum efficiency of a chimney to produce natural draught is
133. Maximum theoretical velocity imparted to flue gases escaping through chimney due to natural draught is
134. Which is not a positive displacement type air compressor?
135. Volumetric efficiency of an air compressor will_________ with increase in clearance ratio.
136. Capacity of an air compressor is given in terms of its
137. Work consumed by an air compressor will be least in case of
138. Mechanical efficiency of an air Compressor accounts for the losses occurred