Q.1 Which refrigerant is used in central air conditioning?
A. Ammonia
B. R-11
C. R-12
D. Freon
Ans-: B
Q.2 The radius for which the heat transfer rate is maximum known as ___.
A. Mean radius
B. Radius of heat transfer
C. Critical radius
D. None of these
Ans -: C
Q.3 The rate at which radiation leaves a surface called ?
A. Viscosity
B. Capacity ratio
C. Reflectivity
D. Radiosity
Ans-: D
Q.4 Which surface has zero reflectivity?
A. Black body
B. White body
C. Rough surface
D. Finished surface
Ans-: A
Q.5 Cork is a good insulator because it has _______.
A. Black body
B. Porous body
C. Rough body
D. None of these
Ans-: B
Q.6 Which type of calorific value is measured by bomb calorimeter?
A. Higher calorific value
B. Lower calorific value
C. All calorific value
D. None of the above
Ans-: A
Q.7 In-viscous fluid is ______.
A. Frictionless fluid
B. Real fluid
C. A+B
D. None of these
Ans-: A
Q.8 The cable attached to the supports and carries its own weight is called?
A. Supporting cable
B. Joining cable
C. Catenary cable
D. Balancing cable
Ans-: C
Q.9 What is the bending moment at hinge of beam?
A. One
B. Zero
C. Maximum
D. Minimum
Ans-: B
Q.10 The beam has more than 2 support below the beam is known as ___?
A. Continuous beam
B. Cantilever beam
C. Simple beam
D. None of the above
Ans-: A
Q.11 The radius of Mohr circle represents the value of maximum ______.
A. Stress
B. Strain
C. Shear stress
D. Shear strain
Ans -: C
Q.12 How much is shear stress on the principal planes?
A. Zero
B. One
C. Two
D. 1 / 2
And -: A
Q.13 How many time second pendulum have?
A. 5 seconds
B. 10 seconds
C. 2 seconds
D. 1 second
Ans -: C
Q.14 What is the value of shear force ,where bending moment is maximum?
A. 1.5
B. 2.5
C. Zero
D. 1.15
Ans -: C
Q.15 The rate of change of bending moment along the length of the beam is known as ___.
A. Shear force
B. Shear stress
C. Bending force
D. Inertia force
Ans -: A
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