Related Questions

"I impressed the lesson upon him. 'What does 'impressed" mean here?
A An impact cast upon one's mind
B A learning sent to someone
C An idea shared to someone
D A lesson conveyed to someone
In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the
A Ostwald chart
B Cox chart
C Sankey diagram
D None of these
India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that
A Longitudes are not parallel lines
B The distance between latitudes remains the same but the distance between longitudes is greatest at the Equator and nil at the poles where all longitudes join
C All longitudes with their opposites form great circles
D The earth is not a perfect sphere
In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.
A Same
B Less
C Greater
D None of these
What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition?
A 0.5
B 0.67
C 1
D 2
In an electric room heat convector the method of heating used is Resistance heating
A True
B False
In heating the ferromagnetic material by induction heating, heat is produced due to
A Induced current flow through the charge
B Hysteresis loss taking place below Curie temperature
C Due to hysteresis loss as well as eddy current loss taking place in the charge
D None of the above factors
Heating wet steam at constant temperature is heating it at constant
A Volume
B Pressure
C Entropy
D Enthalpy
In resistance heating highest working temperature is obtained from heating elements made of
A Nickel copper
B Nichrome
C Silicon carbide
D Silver
The relative heat absorption for successively added equal areas of boiler convection heating surfaces
A Increases
B Decreases
C Remain unaffected
D First increases and then decreases

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