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SSC JE 2019-20 Machine Tools
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Question 1
In centerless grinding, workpiece is supported by ________.
Question 2
For turning a small taper on a long work-piece, the suitable method is ________.
Question 3
Which type of lathe is also known as centre lathe________?
Question 4
The thickness of the chip in upmilling is _______ at the beginning of the cut.
Question 5
What is the gearing ratio for cutting R.H. threads of 3.5mm pitch on a lathe having lead screw of 6mm pitch ______?
Question 6
Trepanning operation is used for
Question 7
Margin wear in drill is due to ________.
Question 8
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 ___________.
Question 9
A milling machine has the following two index plates supplied along with the indexing head:
Plate 1 : 15, 16,17, 18, 19, 20, hole circles
Plate 2 : 21, 23, 27, 29, 31, 33 hole circles
If is proposed to mill a spur gear of 28 teeth using simple indexing method. Which one of the following combinations of index plate and number of revolutions is correct?
Plate 1 : 15, 16,17, 18, 19, 20, hole circles
Plate 2 : 21, 23, 27, 29, 31, 33 hole circles
If is proposed to mill a spur gear of 28 teeth using simple indexing method. Which one of the following combinations of index plate and number of revolutions is correct?
Question 10
Complex irregular three dimensional surfaces can be located using the following method ________.
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Jul 12ESE & GATE ME
