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Define the following :
(a) Boot Strap Air Evaporative System
(b) Simple VCR System
(c) Advantage and disadvantage of VCR system over Air Refrigeration System
(d) Reduced Ambient Air Cooling System
(e) Define a refrigerant. Describe primary, secondary and eco-friendly refrigerants with examples. Also discuss the physical and thermodynamic properties of the following refrigerants :
R-11, R-12, R-22, R-717
(f) Illustrate with neat sketches various methods of refrigeration.
Illustrate what is meant by volumetric efficiency of a compressor ? Illustrate how clearance volume affects it. Discuss the effects of clearance volume on the performance of an air
CO2 WELDING-Power Source Normally, a power source with constant potential characteristics is used for CO 2 welding as it has the ability to self regulate the welding arc. The
(a) What is an ideal gas ? How does it differ from perfect gas ? Write the different laws of perfect gas. (b) The pressure in a car tyre was checked at 15 o C temp. and reading
Rutile Electrode This type has thicker coating than cellulosic coated and the flux is mainly composed of rutile (titanium di - oxide) and silicates, with a negligible amount of c
Airport Pavement: Airport pavements can be: (a) Flexible, and (b) Rigid (cement concrete). Since cement concrete pavements have transverse and longitudi
Compute the outside diameter of the shaft: A hollow shaft of diameter ratio is 0.4 is needed to transit 600 kW at 120 rpm. The maximum torque being 20% greater than the mean t
Product life-cycle management: There have also been changes in the use of some pre-existing data formats. Open associations have been formed to encourage some formats to becom
A force F(t) is suddenly applied to a mass m which is supported by a spring with a constant stiffness ‘K'. After a short period of time T, the force is suddenly removed. In the mea
show that energy is property of system
Consider fully developed laminar flow with constant properties in a circular tube. Let there be heat transfered to or from the fluid at a constant rate per unit of tube length.Ad
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