Q.1
As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.
Q.2
The following type of bonding is strongly directional in solids.
Q.3
Desert air coolers being rendered ineffective in rainy season is due to
Q.4
Auto collimator is used to check
Q.5
About __________ ton of coke is required in a cupola to produce one ton of casting.
Q.6
Pick out the wrong statement.
Q.7
The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
Q.8
A reduction in thermal resistance during heat transfer does not occur in the
Q.9
Material of construction of foundary crucible is
Q.10
A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place
Q.11
The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the
Q.12
Non-ferrous alloys used for making cutting tools need not have high
Q.13
The gases used in the treatment of asthma is a mixture of __________ and oxygen.
Q.14
While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the
Q.15
Enzymes belong to the category of
Q.16
Pick out the wrong statement.
Q.17
Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
Q.18
Dryness fraction of dry steam is
Q.19
At room temperature, F.C.C. crystal structure is observed in
Q.20
Pick out the wrong statement:
Q.21
Out of the following, the highest emf for a given temperature is generated by the __________ thermocouple.
Q.22
__________ property of a material is determined by the Herbert Pendulum device.
Q.23
For preparation of porous bearings by powder metallurgy, preferred particle shape is
Q.24
The suction and delivery pressure for a two stage compressor are 1 and 25 atm respectively. The intermediate stage pressure would be around __________ atm.
Q.25
Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.
Q.26
Pick out the correct statement
Q.27
Which of the following is not the function of a volute casing provided in a centrifugal pump?
Q.28
Monazite deposits constitute an important source for the following metal.
Q.29
Phosphorous is added to copper melt to
Q.30
Heating of ferromagnetic materials to a temperature above Curie temperature makes it
Q.31
In case of fluid moving machineries, the relationship between saturation temperature and pressure decides the process of
Q.32
Pressure gauges are never connected directly to the live steam line; rather a loop or syphon is interposed as close as possible to the pressure gauge. This is done to
Q.33
Which of the following materials has the poorest electrical conductivity?
Q.34
Water flow in the river during flood can be categorised as the __________ flow.
Q.35
__________ is a non volatile film forming constituent of a paint.
Q.36
'Cryogenics' is concerned with the generation & use of low temperature in the range of
Q.37
Which of the following is not an ore of copper?
Q.38
Particle nature of cathode rays is proved due to the fact that they
Q.39
The units of the rate constant for a second order reaction are
Q.40
The single most imortant requirement for a turbine blade material is
Q.41
Material having maximum density is
Q.42
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO and for complete oxidation of un-burnt hydrocarbons is
Q.43
Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.
Q.44
The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?
Q.45
Which of the following alloying elements when added in steel does not improve its lachinability?
Q.46
During solid state sintering of powders, the following mechanism can be active.
Q.47
On-off control
Q.48
Which of the following is an unconventional source of energy ?
Q.49
Pick out the wrong conversion of absolute & kinematic viscosities.
Q.50
Which of the following metals is not subjected to electrolytic refinning/purification?
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