Related Questions
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Corrosion of metals cannot be prevented by its
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The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the
A. Pipe roughness & pipe diameter
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On being hit with a hammer, __________ will readily fracture.
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Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat interaction of 3000 kJ causes the surroundings to be heated. Internal energy change of the gas during the compression is __________ kJ.
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4
In extrusion of metals, which of the following statement is true?
A. Speed of the extruded material is same as that of ram speed
B. Redundant work is a function of the die angle
C. Relative motion between the billet surface and the container wall is always present
D. Hollow ram is used for indirect extrusion
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4
Triple point of water is
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A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
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Batch process is preferred over continuous process, when the
A. Product yields and quality cannot be achieved in continuous process, because of long residence time
B. Sales demand of product is not steady
C. Same equipment cannot be used for several processes of the same nature
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Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
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__________ is a non volatile film forming constituent of a paint.
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Which one is neutral in character?
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Air-petrol ratio for maximum power generation in spark ignition engine is about
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The normal stress is the same in all directions at a point in a fluid, only when the fluid
A. Is at rest & has zero viscosity
C. Fluid layer has no motion relative to an adjacent layer of fluid
D. is incompressible & frictionless
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4
Filler material used in welding should have __________ as compared to the parent metal to be welded.
A. Lower melting temperature
B. Same melting temperature
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__________ of hard alloy and tool steel is done to make it easily machinable.
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While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the
C. Better finish and surface appearance
D. High plastic deformation
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The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
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Which of the following is a commonly used manometric liquid for low pressure range?
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The atmospheric temperature during melting of ice/snow (in the atmosphere)
D. May increase or decrease; depends on the altitude where snow melts
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__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.
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Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
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Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
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Heat required to raise the temperature of a body by 1 °C is called its
B. Specific heat capacity
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Current employed in resistance welding ranges from __________ kVA/.
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Basicity of the slag in Indian blast furnace is in the range of
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The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is
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Hot extrusion of aluminium is done in the temperature range of __________ °C.
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Highest cutting speed is achieved by the __________ tool material.
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Rankine cycle comprises of two isothermal and two __________ processes.
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The joint for soldering is supported by binding wire made of