Q.12 A refrigerator uses R-12 and operates on an ideal vapor compression cycle has condenser temperature of 45 °C and an evaporator temperature of −15 °C. What will be the coefficient of performance of the cycle? (Given the ...
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Q.51Ans 1. 20 µm2. 40 µm3. 30 µm4. 10 µmCorrect Ans: 4
Q.42 Atmospheric air at 100 kPa and 24 °C has a relative humidity of 70%. What will be the partial pressure of dry air? [Saturation pressure of water at 24 °C is 3 kPa]Ans 1. 97.9 kPa2. 97 ...
Q.5 The amount by which actual size of shaft is less than the actual size of the mating hole in an assembly is known as:Ans 1. Interference2. Limit of size3. Tolerance4. ClearanceCorrect Ans: 4
Q.31 To produce a component, any of the four processes can be adopted. Process A: Fixed cost = Rs. 20, Variable cost/piece = Rs. 4Process B: Fixed cost = Rs. 50, Variable cost/piece = Rs. 3Process C: ...
Q.22 A mechanism having 4 links with all binary pair have the number of instantaneous center equal to:Ans 1. 42. 63. 54. 7Correct Ans: 2
Q.34 Which of the following is CORRECT?Ans 1. Plug gauge is used to test accuracy of diameter of hole2. Ring gauge is used to test accuracy of roughness of a solid shaft3. Ring gauge is used to test ...
Q.47 “If three bodies have relative motion among themselves, their I – center must lie on a straight line” is known as:Ans 1. Kutzback’s criterion2. Kennedy’s theorem3. Kelvin theorem4. Gruebler’s criterionCorrect Ans: 2
Q.35 “The capacity of a material to absorb the energy when it is deformed elastically and release that energy upon undeforming” is known as:Ans 1. Hardness2. Toughness3. Plasticity4. ResilienceCorrect Ans: 4
Q.28 Which of the following is NOT the advantages of CAD/CAM in manufacturing?Ans 1. It increases machine utilization2. It reduces manufacturing lead time3. It increases in-process inventory4. It provides scheduling flexibilityCorrect Ans: 3
