InterviewSolution

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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

101.	Which of the following hammers is also called a steam hammer?(a) Board hammer(b) Air-lift hammer(c) Power drop hammer(d) Nail hammerI have been asked this question during an interview for a job.My doubt stems from Drop and Press Forging in section Forming Process of Casting-Forming-Welding II
Answer» RIGHT choice is (c) POWER drop hammer Best EXPLANATION: NONE.

102.	Better accuracy and surface finish is achieved by performing hot forming process instead of the cold forming process.(a) True(b) FalseThe question was asked in exam.My question is based upon Behaviour in Metal Forming topic in chapter Forming Process of Casting-Forming-Welding II
Answer» The correct CHOICE is (b) False To elaborate: Cold forming is a metal forming process that is performed at room temperature or slightly above. It has MANY advantages LIKE better surface finish, high accuracy, high strength etc. And by performing HOT forming operation, the surface finish of the part is very poor, which requires heavy machining to finish the metal part.

103.	There is no slipping between roller and workpiece.(a) True(b) FalseThe question was posed to me in exam.This key question is from Flat Rolling topic in chapter Forming Process of Casting-Forming-Welding II
Answer» The CORRECT option is (a) True To explain I would say: There is a CERTAIN AMOUNT of slipping that is observed, between the roller and the workpiece. The magnitude of slipping is measured by the TERM CALLED Forward slip.

104.	Closed die forging process is also called as impression die forging.(a) True(b) FalseThe question was asked in homework.Asked question is from Classification of Metal Forming Processes in division Forming Process of Casting-Forming-Welding II
Answer» CORRECT OPTION is (a) True Easy explanation: Closed DIE forging is also CALLED as impression die forging. In this method, die consists of some internal impression that imparted to the work piece or specimen used for the forming. During full closing of die, impression is FULLY filled with the deformed billet and then further taken out of the impression to form flash.

105.	Cold forming is a process which works when the temperature of metal is above its re-crystallization temperature.(a) True(b) FalseThis question was addressed to me in an interview for job.My question is from Classification of Metal Forming Processes in portion Forming Process of Casting-Forming-Welding II
Answer» RIGHT option is (b) False Explanation: On the basis of TEMPERATURE, metal forming mainly has two types which are COLD forming and hot forming. Hot forming is defined as the mechanical working of metal at HIGHER temperature above its re-crystallization temperature. And cold forming is a process which WORKS at temperature below the re-crystallization temperature of metal.

106.	In which of the following operations is a dummy block used?(a) Indirect extrusion(b) Direct extrusion(c) Impact extrusion(d) Hydrostatic extrusionI have been asked this question in homework.The question is from Extrusion and Wire Drawing topic in chapter Forming Process of Casting-Forming-Welding II
Answer» Correct option is (B) DIRECT extrusion For EXPLANATION: In direct extrusion or forward extrusion, a DUMMY block is used during the functioning of the extrusion process.

107.	In which of the following process, does the die have a concave surface?(a) Fullering(b) Edging(c) Cogging(d) CavitisingThis question was posed to me in an interview for job.My question is taken from Open and Closed Die Forging topic in section Forming Process of Casting-Forming-Welding II
Answer» RIGHT option is (b) Edging Explanation: AMONG the following PROCESSES, that are FULLERING, edging, cogging and cavitising, edging is a process in which, the die has a concave shape.

108.	Incomplete welding may cause which of the following defect?(a) Folds(b) Laminations(c) Wavy edges(d) Zipper cracksThis question was addressed to me at a job interview.My question is based upon Defects in Rolled Parts in section Forming Process of Casting-Forming-Welding II
Answer» The CORRECT answer is (b) Laminations The best I can EXPLAIN: Because of incomplete welding in the BLOW holes and the pipes, SMALL laminations occur, causing the strength of the MATERIAL to reduce.

109.	How many dies are used in reciprocating flat die machines?(a) 2(b) 3(c) 4(d) 5I got this question during an interview for a job.My question is taken from Principle of Roll Pass in section Forming Process of Casting-Forming-Welding II
Answer» Right option is (a) 2 To EXPLAIN: In a RECIPROCATING flat die MACHINE, there are only two DIES which are used, one of them is stationery, while the other is reciprocating.

110.	Which of the following processes is not the type of bulk forming process in the metal forming?(a) Bending(b) Rolling(c) Forging(d) ExtrusionI got this question by my college director while I was bunking the class.The origin of the question is Metal Forming Processes in portion Forming Process of Casting-Forming-Welding II
Answer» Correct CHOICE is (a) Bending Best EXPLANATION: Bulk forming is a deformation process which results in a massive shape change of the material. The ratio of surface area to volume of the material is relatively small. It includes processes like forging, EXTRUSION and rolling. But the bending process is a part of sheet metal forming which has surface area to volume ratio relatively HIGH.

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