Absolute zero is
A.0?C
B.0?F
C.0?R
D.0?K
E.273?C
Category: Heat Transfer Mcqs
The process of separation of solutes of different molecular sizes in a liquid solution by use of a sutable membrane is known as
A.Hyper sorption
B.Distillation
C.Adsorption
D.Leaching
E.Dialysis
Ditus Boelter equation is applicable in case of fluids flowing in
A.Laminar region
B.Turbulent region
C.Transition region
D.Any of the above
E.None of the above
The first stage of crystal formation is
A.Nucleation
B.Separation
C.Foaming
D.Vortexing
E.None of the above
Which of the following material has lest value of thermal diffusivity?
A.Lead
B.Mercury
C.Aluminium
D.Iron
E.Rubber
A body cools from 90?C to 80?C in 5 minutes. Under the same external conditions to cool from 80?C to 70?C the body will take
A.5 minutes
B.4 minutes
C.2.5 minutes
D.More than 5 minutes
E.Cannot be predicted
Steam traps are used to
A.Regulate the flow
B.Balance the pressure
C.Remove condensate
D.Add moisture
E.Heat steam
a micron is equal to
A.10-4 metres
B.10-5 metres
C.10-6 metres
D.10-8 metres
E.10-12 metres
All temperatures above the freezing point of gold are usually determined by
A.Thermo couple
B.Gas thermometer
C.Optical pyrometer
D.Resistance bridge
E.Any of the above
When analogy is drawn between heat flow and electricity flow in circuits, the heat flow of thermal circuits is equated in the electrical circuit against
A.Voltage
B.Current
C.Resistance
D.Charge (coulombs)
