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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
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
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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