Q.1
As the fluid flow rate increases, the float of the rotameter
Q.2
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
Q.3
The most suitable material for a sewer for carrying storm water is
Q.4
Window panes of aeroplanes are normally made of
Q.5
Viscoelastic behaviour is observed in __________ materials.
Q.6
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
Q.7
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
Q.8
Addition of __________ to steel can not impart it high strength at elevated temperature.
Q.9
Lead percentage in pure galena is about
Q.10
A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is
Q.11
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
Q.12
Which of the following alloying elements is present in maximum percentage in high speed steel.
Q.13
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Q.14
If Reynolds number is greater than 1, then the
Q.15
Electrolytes conduct electric current by
Q.16
In chemical dehumidification of air
Q.17
Liquid nitrogen containers can be made from
Q.18
Material of construction of the electrode used in the electric resistance welding is
Q.19
Silicon percentage in silicon steel used for electrical equipments is about
Q.20
When a copper ball is heated, the largest percentage increase will be in its
Q.21
Which of the following is termed as the boiler mounting ?
Q.22
Which of the following is termed as the boiler mounting ?
Q.23
Value of a material is usually considered as a relationship between
Q.24
According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
Q.25
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
Q.26
Faraday's law of electrolysis is related to the
Q.27
Stellite is a trade name for the
Q.28
__________ cycle is the most efficient thermodynamic cycle.
Q.29
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
Q.30
Nitriding of a steel part does not increase its
Q.31
When an isolated thermodynamic system executes a process,
Q.32
In chemical dehumidification process
Q.33
Spherical shape of mercury droplets is due to its
Q.34
Which of the following polymers is obtained by copolymerisation of three monomers?
Q.35
With decrease in the grain size of a material, its creep resistance
Q.36
Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.
Q.37
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
Q.38
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
Q.39
The burnout heat flux in the nucleate boiling regime is not a function of the
Q.40
The cost of providing service in a queing system decreases with the
Q.41
Nickel and __________ are the alloying element added in steel to increase its toughness.
Q.42
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
Q.43
In a fuel cell, chemical energy is converted into
Q.44
Out of the following surfaces, the emis-sivity will be minimum for
Q.45
Which set of materials is used as a moderator in nuclear reactor?
Q.46
Metalloids
Q.47
Temperature attained in soldering of metals is about __________ °C.
Q.48
Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?
Q.49
Which of the following is not a principal alloying element for the structural steel?
Q.50
The speed of sound will be maximum in
0 h : 0 m : 1 s