Related Questions

The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly
A Linear
B Non-linear
C Parabolic
D Hyperbolic
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.
A Increase of pressure
B Increase of thermal conductivity
C Volumetric expansion
D Differential linear expansion
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.
A -38.9
B -11.9
C -60.9
D -80.9
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.
A - 39 and 350
B - 51 and 439
C - 79 and 395
D - 10 and 425
The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.
A Brass for low
B Nickel alloys for high
C Both A & B
D Aluminium for all
Capillary rise of mercury in a small diameter tube is proportional of (where, d = mercury of the rube, σ = surface tension of mercury)
A d
B 1/d
C σ
D 1/σ
Working principle of mercury in glass thermometer is
A Volumetric expansion
B Pressure rise with temperature
C Linear expansion
D None of these
A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
A Head
B Discharge
C Efficiency
D None of these
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
A mercury is a metal.
B density of mercury is greater than that of water.
C cohesion of mercury is greater than its adhesion with glass.
D cohesion of water is greater than its adhesion with glass.
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because
A Mercury is a metal
B Density of mercury is greater than that of water
C Cohesion of mercury is greater than its adhesion with glass
D Cohesion of water is greater than its adhesion with glass

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