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BARC 2020 Manufacturing Nuclear Quiz-2
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Question 1
The dia of a hole is given as 
The upper limit on the dimensions in mm, of the shaft for achieving maximum interfence of 50 microns is
The upper limit on the dimensions in mm, of the shaft for achieving maximum interfence of 50 microns is Question 2
A bar of 75 mm diameter is reduced to 73 mm by a cutting tool while cutting orthogonally. If the mean length of a cut chip is 73.9 mm and rake angle is 15°, then shear angle is _______ degrees.
Question 3
A turning tool with sharp corner and a major cutting edge angle of 50 ° is being used at a feed of 0.05 mm. Another cutting tool has a nose radius of 1.8 mm and feed of 0.268 mm. The minor cutting edge angle of the turning tool for the same surface roughness of the two tools will be ____ degrees.
Question 4
The velocity of the steel at the bottom of the sprue if the sprue height is 50 cm will be? The frictional and other losses are 22%.
Question 5
In a limit system, the following limits are specified to give a clearance fit between a shaft and a hole.
What is the ratio of maximum to minimum clearance______?
What is the ratio of maximum to minimum clearance______?
Question 6
The designation of a standard welding electrode is as follows:
What does 
mean respectively?
Question 7
If the blank thickness is reduced to half and width of stock is doubled, then the ratio of new bending force to the original is __________?
Question 8
The operation in which liquid is flown into voids by capillary action of a powder metallurgy product is known as __________.
Question 9
In an EDM process, using RC circuit a 12mm diameter through hole is made in a steel plate of 50mm thickness using a graphite tool. Resistance of 
, capacitor with capacitance of 
are used in RC circuit. Supply voltage is 220V and discharge voltage is 110V. Average power for the above process is ____________ kW if machining is done for 0.5ms.
, capacitor with capacitance of are used in RC circuit. Supply voltage is 220V and discharge voltage is 110V. Average power for the above process is ____________ kW if machining is done for 0.5ms.
Question 10
A milling cutter of 70 mm diameter with 12 teeth is operating at a cutting speed of 22 m/min and a feed of 0.05 mm/tooth. The feed per minute is ___________.
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