Q.1
The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called
Q.2
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
Q.3
Filler material used in welding having the lowest melting point out of the following is
Q.4
For the same heat input & compression ratio, efficiency of Otto cycle is higher than that of diesel cycle, because in Otto cycle.
Q.5
In the Bayer's process, bauxite is digested under pressure using
Q.6
__________ forces do not act in case of fluids.
Q.7
Powder metallurgy process does not make metal powder by
Q.8
Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.
Q.9
Which of the following is not a characteristic observed in material failure by fatigue fracture ?
Q.10
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
Q.11
The total frictional resistance to fluid flow does not depend upon the
Q.12
Which of the following is a unit of time ?
Q.13
Dies for wire drawing are generally made of
Q.14
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively
Q.15
Cold chiesel & hammers are made of
Q.16
In a casting, cold shut defect is caused by
Q.17
In extrusion of metals, which of the following statement is true ?
Q.18
Surface tension is due to the __________ forces.
Q.19
Pick out the wrong statement.
Q.20
Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be
Q.21
Routing in production, planning & control is concerned with the
Q.22
The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by
Q.23
Which of the following is an example of stress corrosion ?
Q.24
Angular displacement can be measured suitably by a
Q.25
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the
Q.26
Which of the following are made out of the carbon steel having carbon content of 0.9 to 1% ?
Q.27
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is
Q.28
Function of feed check valve in a boiler is to
Q.29
Copper is not present as an alloying constituent in
Q.30
Kinematic viscosity of water as compared to that of air is
Q.31
Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.
Q.32
__________ test can be termed as the semi-distructive test.
Q.33
A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/seC₂ is
Q.34
Inspection of surface and sub-surface cracks in non-magnetic alloys is done by __________ testing method.
Q.35
For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?
Q.36
In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :
Q.37
Milligram of KOH required to saponify 1 gm of oil is called its __________ number.
Q.38
A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.
Q.39
The weight of a body at the centre of the earth is
Q.40
The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by
Q.41
Lead is poured into the joint between two __________ pipes.
Q.42
Lead is poured into the joints between two __________ pipes.
Q.43
Free oxygen is removed from boiler feed water, because it
Q.44
The ratio of coil diameter to wire diameter of a spring is called the spring
Q.45
Pick out the wrong statement about a fast breeder reactor.
Q.46
Coke is added in the blast furnace to
Q.47
Castability of aluminium is increased by the addition of __________ in it.
Q.48
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an
Q.49
Chlorine acts as a bleaching agent only in the presence of
Q.50
During sensible cooling of air, its wet bulb temperature
0 h : 0 m : 1 s