DRDO CNC Operator Model Question Paper | CEPTAM CNC Operator Sample Question Paper
CEPTAM 10 Advertisement has already published on DRDO official website. ceptam 10 recruitment 2022 notification pdf is available on official website. drdo ceptam 10 notification pdf download from drdo website and drdo ceptam 10 online apply through ceptam10.com . Total 09 vacancies are for the post of CNC Operator. Therefore, we are providing the CEPTAM CNC Operator Question paper for your ready reference.
| Sr.No. | Question with options |
| 1 | Several machine tools can be controlled by a central computer in ____
(a) NC (b) CNC (c) DNC (d) None of these Ans –(c) |
| 2 | Part-program can be avoided in __________
(a) NC (b) CNC (c) DNC (d) None of these Ans –(b) |
| 3 | In 25 H7 form of tolerance H stands for _______
(a) Basic size (b) Grade of tolerance (c) Fundamental tolerance (d) Fundamental deviation Ans –(c) |
| 4 | Which of the following alloy is added in h s s for red hardness?
(a) Chromium (b) Nickel (c) Cobalt (d) Vanadium Ans-(c) |
| 5 | The straddle milling is an operation of
(a) Producing grooves around the periphery of a work piece (b) Producing narrow grooves on a work piece (c) Reproduction of an outline on a work piece (d) Machining several surfaces on a work piece simultaneously Ans –(d) |
| 6 | Which of the following is used to hold the machined work piece?
(a) Collet (b) Face plate (c) Four jaw chuck (d) None of these Ans –(a) |
| 7 | Generally the helix angle of slab milling cutter is ______
(a) 59 degree (b) 20 degree (c) 30 degree (d) 25 degree Ans –(c) |
| 8 | Coolant used in milling m/c is known as
(a) Air (b) Water (c) Soluble oil (d) None of these Ans-(c) |
| 9 | The main purpose of a reaming operation, as compared to drilling is to
(a) Drill a hole (b) Finish the drilled hole (c) Correct the hole (d) Enlarge the existing hole Ans-(b) |
| 10 | Soluble oil is used as cutting fluid in
(a) Sawing (b) Reaming (c) Drilling (d) All of these Ans –(d) |
| 11 | Where should you aim the fire extinguisher when using it?
(a) On the tip of the fire (b) On the base of the fire (c) Don’t aim in one place. Spread it out (d) The direction of aiming doesn’t matter Ans –(b) |
| 12 | Which machine tool is known as the mother machine tool?
(a) Drill (b) Milling (c) Lathe (d) Pulley Ans- (c) |
| 13 | Three jaw chuck is also known as _____
(a) Universal chuck (b) Self-centering chuck (c) Universal chuck and self centering chuck both (d) None of these Ans –(c) |
| 14 | Which of the following is NOT true regarding four jaw chuck?
(a) Each jaw can be adjusted independently (b) Movement of jaw is irreversible (c) Movement of jaw is done by the help of square threaded screw (d) It is also known as dog chuck Ans –(b) |
| 15 | With CNC turning machines and preparatory codes what does a G01 represent ?
(a) A code that allows the tool to dwell at a location (b) It instructs the control to move rapidly to specific X and Z locations (c) It is a linear interpolation feed rate code (d) It directs the machine control to use work piece coordinate values stores in memory Ans –(c) |
| 16 | The coolant system of a CNC machine would most commonly be a ____
(a) Low pressure (b) Medium pressure (c) High pressure (d) Gravity Ans –(c) |
| 17 | What is zero suppression when dealing with CNC machines?
(a) It allows dimensions to be written without the zeros in front of the decimal point (b) It is used to reduce the number of zeros in the full format dimensions (c) It allows dimensions to be written without the zeros after the decimal point (d) Where eight digits are required for each dimension Ans –(b) |
| 18 | Which of the following operations will produce a hole with 45 degre chamfers?
(a) Blind hole drilling (b) Spot drilling (c) Center drilling (d) Counter sinking Ans –(b) |
| 19 | In NC (Numerical Control) machine tool, the position feedback package is connected between.
(a) Control unit and programmer (b) Programmer and machine tool (c) Control unit and machine tool (d) Programmer and process planning Ans –(c) |
| 20 | DNC stands for ____
(a) Digital numerical control (b) Direct numerical control (c) Double numerical control (d) None of these Ans-(b) |
| Published On – 24th Aug 2022 | |
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