# If 137+276=435 how much is 731+672

1.  534

2.  1403

3.  1623

4.  1513

4

1623

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If  threecoins are tossed simultaneously,  the probability of getting  at least one head

1.  1/8

2.  3/8

3.  ½

4.  7/8

4

7/8

Explanation :
No Explanation available for this question

# If  a  closed  system  is  undergoing  an  irreversible  process,  the  entropy  of  the system

1.  Must increase

2.  Always remains constant

3.  Must decrease

4.  Can increase, decrease or remain constant

4

Must increase

Explanation :
No Explanation available for this question

# A  coolant  fluid  at  30°C  flows  over  a  heated  flat  plate  maintained  at  a  constant temperature  of  100°C.  The boundary layer temperature distribution at a given location on the plate may be approximated as T=30+70 exp(-Y) where y ( in m) is the distance normal to the plate and T  is in  °C. If thermal conductivity of the fluid is 1.0W/mK, the local convective heat transfer coefficient (in W/m2K) at the location will be

1.  0.2

2.  1

3.  5

4.  10

4

1

Explanation :
No Explanation available for this question

# A frictionless piston-cylinder device contains a gas initially at 0.8MPa and 0.015 m3. It expands quasi-statically at constant temperature t o a final volume of 0.030 m3. The work output (in kJ) during this process will be

1.  8.32

2.  12.00

3.  554.67

4.  8320.00

4

8.32

Explanation :
No Explanation available for this question

# In  an  ideal  vapour  compression  refrigeration  cycle,  the  specific  enthalpy  of Refrigerant (in kJ/kg) at  the following states is given as Inlet of condenser:   283 Exit of condenser:   116 Exit of evaporator:   232 The COP of this cycle is

1.  2.27

2.  2.75

3.  3.27

4.   3.75

4

2.27

Explanation :
No Explanation available for this question

# A  compressor undergoes  a reversible,  steady  flow  process. The gas at inlet and outlet  of  the  compressor  is  designated  as  state  1  and  state  2  respectively. Potential  and  kinetic  energy changes  are  to be  ignored.  The following notations are used: v= specific volume and P=pressure of the gas The  specific  work  required  to  be  supplied  to  the  compressor  for  this  gas compression process is

1.

2.

3.  V1(P2-P1)

4.  - P2(V1-V2)

4

Explanation :
No Explanation available for this question

1.  176.2

2.  196.0

3.  481.0

4.  981.0

4