Related Questions
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4
Coating provided on the electrodes used in the arc welding is not expected to
B. Prevent electrode from contamination
D. Provide protective atmosphere to weld
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4
Vernier calipers cannot be used to measure the
A. I.D. & O.D. of the shaft
D. Clearance between two mating surfaces
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4
On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is
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4
The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)
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4
Fog is an example of colloidal system of
A. Solid dispersed in gas
B. Solid dispersed in liquid
C. Liquid dispersed in gas
D. Gas dispersed in liquid
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4
Which of the following materials has the least scrap value?
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4
Which of the following fastening devices has a head at one end and a nut fitted to the other?
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4
The dimensional formula of bulk modulus of elasticity is same as that of the
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4
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is
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4
__________ is not a heat treatment process.
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4
Friction factor for fluid flow in pipe does not depend upon the
C. Fluid density & viscosity
D. Mass flow rate of fluid
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4
Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?
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4
Window panes of aeroplanes are normally made of
C. Bakelite (phenol formaldehyde)
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4
The following type of bonding is strongly directional in solids.
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4
Which of the following is not categorised as the ore agglomeration process?
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4
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
A. Wet bulb temperature=dry bulb temperature
B. Wet bulb temperature=dew point temperature
C. Saturation temperature=dew point temperature
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4
__________ has a negative co-efficient of linear expansion.
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4
Pick out the wrong statement.
A. Lead can creep under its own weight at room temperature
B. The electrical conductivity of gold is considerably reduced by alloying additions due to the decrease in electron movement
C. Recrystallisation temperature decreases with decrease in strain in a cold worked metal
D. With increase in temperature, the electrical conductivity of intrinsic semi-conductor will increase
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4
Optical activity is a/an __________ property.
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4
Capacity & power requirement for an air compressor working at high altitude compared to sealevel will be
D. Either more or less; depends on the climatic conditions
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4
The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the
A. Ability to absorb shock
B. Capacity to store energy
C. Ratio of the wire & coil diameters
D. Load to produce unit deflection
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4
For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by
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4
Fire refining process is employed in case of
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4
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively
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4
Pick out the wrong statement.
A. Molecules with symmetrical arrangements (e.g. CH4 or CCl4) are non-polar
B. Generally, non-polar compounds are chemically inactive, conduct electricity poorly and do not ionise
C. Most of the hydrocarbons are non-polar
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4
Which of the following is a boiler accessory
i.e., not a boiler mounting?
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4
According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is
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4
Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be
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4
Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
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4
Carbon supply in pack carburising process is in the form of