Production Technology Objective Questions with answers - Set 26 - ObjectiveBooks

# Practice Test: Question Set - 26

1. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
(A) High metal removal rate
(B) Dry machining
(C) Use of soft cutting tool
(D) Surface finish

2. The work or surface speed for cylindrical grinding varies from
(A) 5 to 10 m/min
(B) 10 to 20 m/min
(C) 20 to 30 m/min
(D) 40 to 60 m/min

3. In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is
(A) Depth of cut
(B) Cutting speed
(C) Feed
(D) Tool rake angle

4. A lathe with four steps on the cone pulley and with back-gears will have
(A) Four direct speeds
(B) Four indirect speeds
(C) Four direct and four indirect speeds
(D) Eight indirect speeds

5. The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)
(A) VnT = C
(B) VTn = C
(C) Vn/T = C
(D) V/Tn = C

6. The vector sum of cutting velocity and chip velocity is __________ shear velocity.
(A) Equal to
(B) Less than
(C) More than
(D) None of these

7. In electrochemical machining, the gap between the tool and work is kept as
(A) 0.1 mm
(B) 0.4 mm
(C) 0.35 mm
(D) 0.75 mm

8. A broach has
(A) Roughing teeth
(B) Semi-finishing teeth
(C) Finishing teeth
(D) All of these

9. The angle made by the face of the tool and the plane parallel to the base of cutting tool is called
(A) Rake angle
(B) Cutting angle
(C) Clearance angle
(D) Lip angle

10. The tool made of cemented carbide wear out faster at
(A) Slow speeds
(B) Medium speeds
(C) Fast speeds
(D) Very fast speeds

11. It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?
(A) Sensitive drilling machine
(B) Radial drilling machine
(C) Gang drilling machine
(D) Multiple spindle drilling machine

12. It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed is 60 r.p.m., then the speed of lead screw will be
(A) 10 r.p.m.
(B) 20 r.p.m.
(C) 120 r.p.m.
(D) 180 r.p.m.

13. The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
(A) Feed rate, depth of cut, cutting speed
(B) Depth of cut, cutting speed, feed rate
(C) Cutting speed, feed rate, depth of cut
(D) Feed rate, cutting speed, depth of cut

14. In a center lathe, the cutting tool is fed in _________ with reference to the lathe axis.
(A) Cross direction only
(B) Longitudinal direction only
(C) Both cross and longitudinal direction
(D) Any direction

15. Any number of equal divisions can be obtained on milling machine by
(A) Direct indexing
(B) Simple indexing
(C) Compound indexing
(D) Differential indexing

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