Related Questions
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__________ of hard alloy and tool steel is done to make it easily machinable.
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Current employed in resistance welding ranges from __________ kVA/.
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A pycnometer is used for the measurement of
A. Flow rate of molten metal
B. Specific gravity of a liquid
D. Concentration of a solution
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Between 230 and 370°C, blue brittleness is caused in mild steel because of the
A. Immobility of dislocation
C. Increase in Young's modulus
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__________ has a negative co-efficient of linear expansion.
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A compact estimate about the amount of materials handling between various work stations is obtained from the
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The process of removal of scale formed during hot rolling of steel is termed as
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Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at
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Pick out the wrong statement.
A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding
B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)
C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes
D. Mild steel sheet cannot be spot welded
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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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Specific __________ is a dimensionless quantity.
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Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
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Name the safety device used to protect the boiler, when the water level falls below a minimum level.
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__________ is not used as a material of construction in thermocouples.
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Highest cutting speed is achieved by the __________ tool material.
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The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.
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The cathode in an electrochemical cell always carries
D. Positive or negative charge depending upon the nature of the cell
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__________ circuit is most commonly used to measure strain with the help of a strain gauge.
B. Voltage balancing potentiometric
C. Simple current sensitive
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If a solid is compressed adiabatically in its elastic range, its __________ remains constant
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__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
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Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
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The material used for coating the welding electrode is termed as the
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Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
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Which of the following is not a dielectric material?
A. Cotton, silk and paper
B. Asbestos, glass, porcelain and mica
C. Rubber and polymeric resins
D. All refractory materials
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The most important consideration in value engineering is the
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The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the
C. Floating control action
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In inventory control theory, the economic order quantity (EOQ) is the
A. Lot size corresponding to break even analysis
B. Average level of inventory
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Matte smelting is used in the extraction of
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Oxyacetylene reducing flame is used while carrying out welding on
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Dislocations are __________ defects.