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ITI
Machinist
Machinist Set-1
Lathe
112

Lathe MCQ - Machinist(Set-1) with Answers

112) The included angle of the countersinking portion of a centre drill of type 'B' used for protecting the centre hole is

75 Degree

90 Degree

100 Degree

120 Degree

Answer is:

120 Degree

Lathe MCQ - Machinist(Set-1) with Answers

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Related Lathe MCQ - Machinist(Set-1) with Answers

113) A spindle sleeve is to be assembled to the spindle nose to perform specific operations on a lathe. These sleeves have

External and internal Morse tapers

External Jarno taper and internal Morse taper

External Morse taper and internal Jarno taper

External and internal Jarno taper

Answer is:

External and internal Morse tapers

114) One of the methods of aligning lathe centres is trial cut method. The diameter at the tailstock end is found to be bigger than the headstock end by 0.1 mm after the trial cut. Before the next trial cut the tailstock body should be moved by

0.1 mm towards the operator

0.05 mm towards the operator

0.1 mm away from the operator

0.05 mm away from the operator

Answer is:

0.05 mm towards the operator

115) Taper turning by using compound slide method can cause the following defect.

Chatter

Poor surface finish

Taper angle more than set

Taper angle less than set

Answer is:

Poor surface finish

116) One of the taper turning methods is by offsetting the tailstock. Which part of the tailstock is offset ?

Body

Spindle

Base

Whole unit

Answer is:

Body

Lathe MCQ - Machinist(Set-1) with Answers

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