Q.1
The maximum value, which the residual stress in a material can reach is the __________ of the material.
Q.2
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
Q.3
Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost
Q.4
Direct conversion of thermal energy to electrical energy is facilitated by the
Q.5
Laser is a device to produce
Q.6
Tin based white metals are used, where bearings are subjected to
Q.7
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be
Q.8
A colloidal system, in which a liquid is dispersed in gas is called a/an
Q.9
Disposable patterns are made of
Q.10
__________ addition increases the depth of hardness of steel.
Q.11
When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
Q.12
When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
Q.13
Which of the following approaches the ideal gas behaviour most closely?
Q.14
With increase in temperature, the electrical conductivity of a __________ decreases.
Q.15
The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then
Q.16
The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)
Q.17
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
Q.18
Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
Q.19
A pycnometer is used for the measurement of
Q.20
Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?
Q.21
Which of the following is an ore dressing operation?
Q.22
A material being tested for endurance strength is subjected to the __________ load.
Q.23
__________ of grey cast iron produces white cast iron.
Q.24
Which of the following pairs is not correctly matched?
Q.25
In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of
Q.26
Property of a material to resist a tensile force without giving away is a measure of its
Q.27
If a solid is compressed adiabatically in its elastic range, its __________ remains constat
Q.28
Filler metal is used in __________ welding.
Q.29
Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
Q.30
It is possible to form martensite
Q.31
Which of the following is the most elastic material?
Q.32
Maximum consumption of limestone is in the __________ industry.
Q.33
Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
Q.34
Which of the following is not a cupro-nick-el alloy?
Q.35
Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
Q.36
An example of unsteady non uniform flow is the flow of liquid under pressure through a
Q.37
A material being tested for endurance strength is subjected to the __________ load.
Q.38
As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.
Q.39
Speisses is a mixture of the following:
Q.40
LVDT used for displacement measurement is a/an __________ transducer.
Q.41
What is the pH of distilled water?
Q.42
Which of the following is not a dielectric material?
Q.43
Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is
Q.44
Which of the following if present in iron ore, enhances its value?
Q.45
Killed steels
Q.46
Hot working of lead is carried out at
Q.47
Cast iron contains __________ percent carbon.
Q.48
The condition of diffraction from a crystal is given by
Q.49
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
Q.50
Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its
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