Related Questions

If a truck can carry 10 to 16 boxed refrigerators, then what is the least number of refrigerators that 4 trucks can carry?
A 40
B 52
C 48
D 64
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
A One-half
B One-third
C Two-third
D Three-fourth
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is
A $$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{2{\text{g}}}}$$
B $$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{\text{g}}}$$
C $$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{2{\text{g}}}}$$
D $$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{\text{g}}}$$
Refrigerating meats________the spread of bacteria.(Chose the word/phrase That best completes the sentence)
A Slows
B Slowing
C to slow
D is slowed
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
A Bigger
B Smaller
C Equal
D Smaller/bigger depending on capacity
In a refrigerating machine, heat rejected is _________ heat absorbed.
A Equal to
B Less than
C Greater than
D None of these
A one tonne refrigerating machine means that
A One tonne is the total mass of machine
B One tonne refrigerant is used
C One tonne of water can be converted into ice
D One tonne of ice when melts from and at 0°C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by
A Operating the machine at higher speeds
B Operating the machine at lower speeds
C Raising the higher temperature
D Lowering the higher temperature
The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.
A Kinematic viscosity
B Work
C Temperature
D None of these
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
A Copper
B Aluminium
C Steel
D Brass

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