VSSC Technician Machinist 2012 Paper

Vikram Sarabhai Space Centre Technician Machinist 2012 Paper

VSSC Technician Exam 2023 will be conducted on 20th Aug 2023 for the post Technician. If you are the  aspirants of the said exam, then you must read this question paper for your practice.

In IS system of limits & fits, where the different types of fits are obtained by varying the size of shaft, the name given to the system is _______
(a) Hole basis system
(b) Limit basis system
(c) Shaft basis system
(d) None of these

The grain size of a grinding wheel is indicated by number. Which range of grain size is referred to as ‘Very Fine’?
(a) 10 – 20
(b) 30 – 60
(c) 220 – 600
(d) 80 – 180

Unit of specific gravity is ______
(a) gm/cc
(b) gm per cm sq
(c) gm-s
(d) None of the above

Due to continuous use, the grinding wheel of an off hand grinder is glazed locally. What tool will you use to rectify these defects?
(a) Buffing wheel
(b) Diamond wheel
(c) CBN wheel
(d) Diamond dresser

What is the effect of clearance angle of cutting tool in lathe, when it is set above the center height?
(a) Front clearance angle gets increased
(b) Front clearance angle gets decreased
(c) No change in front clearance angle
(d) None of these

For turning cast iron, which tool material is most suitable for turning with maximum cutting speed?
(a) Diamond
(b) Stellite
(c) Cemented carbide
(d) HSS

What is the name of the control system of the CNC machine in which the actual position of the tool is compared with the input value?
(a) Hydraulic control
(b) Servo control
(c) Pneumatic control
(d) None of these

A hole of diameter 20 H7 is to be finished. What measuring device will you select to check whether the size of hold is within the limit or not?
(a) Limit plug gauge
(b) Vernier micrometer
(c) Vernier caliper
(d) Limit ring gauge

Morse taper is one of the internationally accepted standard tapers. The Morse tapper are available in the form _____
(a) 0 to 7
(b) 0 to 8
(c) 1 to 7
(d) 1 to 8

A gear wheel has 36 teeth & 3 mm module, its pitch diameter is ____
(a) 12 mm
(b) 75 mm
(c) 80 mm
(d) 108 mm