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MCQ - Mechanical TNPSC JTO
JTO - 436 - Fitter - 436 - Unit VI Turning

151)   

The quick-change gear box in a lathe is used to:

A.
B.
C.
D.
Answer: B
152)   

In thread cutting, the carriage is moved along the bed by:

A.
B.
C.
D.
Answer: B
153)   

The feed mechanism provided on the apron of a lathe is known as:

A.
B.
C.
D.
Answer: B
154)   

The cutting tool is advanced in which direction during longitudinal feed?

A.
B.
C.
D.
Answer: A
155)   

The cutting tool is advanced in which direction during cross feed?

A.
B.
C.
D.
Answer: B
156)   

The pitch of a thread is controlled by:

A.
B.
C.
D.
Answer: A
157)   

Which gear controls the direction of carriage movement for feed and threading?

A.
B.
C.
D.
Answer: B
158)   

In thread cutting, the cutting tool is set at an angle equal to:

A.
B.
C.
D.
Answer: C
159)   

Which part of the lathe protects the lead screw when it is not in use?

A.
B.
C.
D.
Answer: A
160)   

While cutting metric threads on a lathe, the half-nut lever must be:

A.
B.
C.
D.
Answer: B
161)   

The most common device used to hold a cylindrical workpiece in a lathe is:

A.
B.
C.
D.
Answer: B
162)   

A long shaft is usually held in a lathe by:

A.
B.
C.
D.
Answer: A
163)   

The 3-jaw chuck is mainly used for holding:

A.
B.
C.
D.
Answer: C
164)   

A 4-jaw independent chuck is mainly used to hold:

A.
B.
C.
D.
Answer: C
165)   

Mandrels are used in lathes for:

A.
B.
C.
D.
Answer: A
166)   

A faceplate is used in a lathe to hold:

A.
B.
C.
D.
Answer: A
167)   

In the “between centers” method, the job is rotated by:

A.
B.
C.
D.
Answer: B
168)   

Which holding device provides the most accurate centering of work?

A.
B.
C.
D.
Answer: C
169)   

Which of the following is NOT a method of holding jobs in a lathe?

A.
B.
C.
D.
Answer: C
170)   

A job with an off-center hole is best held in:

A.
B.
C.
D.
Answer: B
171)   

The driving plate in a lathe is used along with:

A.
B.
C.
D.
Answer: B
172)   

When a job has no hole for mounting, it can be held securely in:

A.
B.
C.
D.
Answer: B
173)   

For machining thin and flat jobs, the best holding method is:

A.
B.
C.
D.
Answer: C
174)   

In “between centers” holding, the dead center is fitted in:

A.
B.
C.
D.
Answer: B
175)   

A collet chuck is generally used for:

A.
B.
C.
D.
Answer: C