Segmental chips are formed during machining
A. mild steel
B. cast iron
C. high speed steel
D. high carbon steel
Answer B
The leakage in a refrigeration system using ammonia is detected by
A. halide torch
B. sulphur sticks
C. soap and water
D. all of the above
ANswer B
The process, generally used in summer air conditioning to cool and dehumidify the air, is called
A. humidification
B. dehumidification
C. heating and humidification
D. cooling and dehumidification
Answer D
The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called
A. First law of thermodynamics
B. Newton's law of cooling
C. Newton's law of heating
D. Stefan's law
The rate of heat flow through a body is . The term x/kA is known as
A. thermal coefficient
B. thermal resistance
C. thermal conductivity
D. none of the above
