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Consider the following statements in connection with deflection-type and null-type instruments: 1. Null-type instruments are more accurate than the deflection-type ones. 2. Null-type of instrument can be highly sensitive compared to a deflection-type instrument. 3. Under dynamic conditions, null-type instruments are less preferred to deflection-type instruments. 4. Response is faster in null-type instruments as compared to deflection-type instruments. Which of the above statements are correct?
In drop forging process, the forging is done by dropping the __________ at high velocity.
Precision forging is a type of forging operation in which the metal stocks and dies are controlled very tightly.
Consider the following grammar and the semantic actions to support the inherited type declaration attributes. Let X1, X2, X3, X4, X5 and X6 be the placeholders for the non-terminals D, T, L or L1 in the following table: Production rule Semantic action D → T L X1.type = X2.type T → int T.type = int T → float T.type = float L → L1, id X3.type = X4.type addType(id.entry, X5.type) L → id addType(id.entry, X6.type)   Which one of the following are the appropriate choices for X1, X2, X3 and X4?
Consider the following statements regarding defects in forgings 1. Flakes are internal breaks or ruptures occurring in some grades of alloy steel. 2. Die shift is caused by misalignment between the top and bottom forging dies. 3. Fins and rags are small projections or loose metal driven into the surface of the forging. Which of the above statements are correct ? 
Consider the following statements about forging: 1. Forgings have high strength and ductility. 2. Forgings offer great resistance to impact and fatigue loads. 3. Forging assures uniformity in density as well as dimensions of the forged parts. Which of the above statements are correct?
Among casting, forging and forging which has the slowest rate of production?
Closed die forging process is also called as impression die forging.
For the minimum metal loss, the flash-less forging is better than the impression die forging.
Drop forging is the most accurate form of forging.