Q.1
X-rays do not exhibit the property of
Q.2
Dowtherm is a
Q.3
Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is
Q.4
During brazing, if the fluxes are entrapped, it results in the
Q.5
Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
Q.6
Which of the following exemplifies resemblence with the extrusion process ?
Q.7
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
Q.8
Largest application of laser welding is in __________ welding.
Q.9
Nitriding of steel is a process for
Q.10
Pick out the wrong statement.
Q.11
Diamagnetic materials
Q.12
The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the __________ content in steel.
Q.13
Dew point temperature always gives an indication of the __________ of the moist air.
Q.14
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
Q.15
Which of the following does not lower the surface tension of liquids ?
Q.16
Thermal expansion of solid is employed in the temperature measurement by a
Q.17
Often earing defects are found during deep drawing operation, because the
Q.18
Drills are usually made of
Q.19
Which of the following is a disaccharide?
Q.20
Which one of the following is incombustible ?
Q.21
A dense structure of grinding wheel is not used for the
Q.22
The hardness of a grinding wheel is specified by the
Q.23
Reynolds number of a fluid flowing in a circular pipe is 10000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
Q.24
Which of the following is an acidic constituent of B.F. slag ?
Q.25
Identify the correct statement.
Q.26
Desalination of water
Q.27
Which of the following is the most wear resistant grade of carbide used for the cutting tools?
Q.28
In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that
Q.29
Absolute zero pressure can be attained at a temperature of
Q.30
Which drug is made from vegetables ?
Q.31
The entropy change for a spontaneous process is
Q.32
Addition of silicon to cast iron
Q.33
Dielectric
Q.34
Dew point of air indicates its
Q.35
Copper deposits are found in India at the following location:
Q.36
__________ remains constant during the adiabatic cooling of moist air.
Q.37
Pick out the wrong statement.
Q.38
Stainless steel is welded with difficulty because of
Q.39
Which of the following properties of a solid is not dependent on crystal imperfection ?
Q.40
Hot & cold working of material causes its __________ deformation.
Q.41
__________ of austenite decreases the hardenability in steel.
Q.42
Ceramic tips for the cutting tool are prepared from __________ powder.
Q.43
Ceramic tips for the cutting tool are prepared from __________ powder.
Q.44
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Q.45
Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
Q.46
Thermal conductivity of a material does not depend upon its
Q.47
Property responsible for the talcum powder to cling to the skin is the
Q.48
Increasing the temperature of a material makes it
Q.49
The starting of a car takes time in winter, because the
Q.50
The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².
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