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ISRO Mechanical Exam: Manufacturing Quiz

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Question 1

In drop forging the forging is done by

Question 2

Match list I (welding effects) with list II (causes) and select the correct answer using the codes given below the lists:
List - I (Welding defects)
A) Spatter
B) Distortion
C) Slag inclusion
D) Porosity
List - II( Causes)
1. Wet electrodes
2. Arc blow
3. Improper cleaning in multipass welding
4. Poor joint selection

Question 3

It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has pitch of 6 mm. If the spindle speed is 60 rpm, then the speed of the lead screw will be

Question 4

Match List-I (Machining Process) with List-II (Associated Moderate) and select the correct answer using the codes give below

List-I

A. Ultrasonic machining

B. EDM

C. ECM

D. EBM
List-II

1) Kerosene

2) Abrasive slurry

3) Vacuum

4) Salt solution




Question 5

In a single micrometer with screw pitch 0.5 mm and divisions on thimble 50, the reading corresponding to 5 divisions on barrel and 12 divisions on thimble is
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