MCQs of Measurement of Screw Thread and Gear (Mechanical Measurement and Metrology - 3141901)

Mechanical Measurement and Metrology (3141901) MCQs

MCQs of Measurement of Screw Thread and Gear

Showing 11 to 19 out of 19 Questions

11.

Which of the following is the tester in which the gear being inspected is made to mesh with a standard gear and a dial indicator is used to capture the radial errors?

(a)	Pitch-checking instrument
(b)	Johnson gear tester
(c)	Parkinson gear tester
(d)	McMillan gear tester

12.

The angle formed between a flank of the thread and the perpendicular to the axis of the thread, which passes through the vertex of the fundamental triangle, is called ______.

(a)	a helix angle
(b)	a flank angle
(c)	a lead angle
(d)	an included angle

13.

The pitch error that occurs whenever the tool–work velocity ratio is incorrect but constant is referred to as a ______.

(a)	cyclic error
(b)	velocity error
(c)	progressive error
(d)	non-progressive error

14.

In which of the following cases is the pitch measured parallel to the thread axis correct, but the threads are not cut to a true helix?

(a)	Drunken threads
(b)	Sunken threads
(c)	Whitworth threads
(d)	Metric threads

15.

Which of the following is not the name of the major diameter of an external thread?

(a)	Outside diameter
(b)	Crest diameter
(c)	Full diameter
(d)	Cone diameter

16.

What is a thread per inch in the screw thread?

(a)	Pitch in inches
(b)	Axial distance moved by threaded part
(c)	Reciprocal of pitch in inches
(d)	Radial distance moved by threaded part

17.

For a diameter of 20 mm, several pitches given are 1, 1.5, 2 and 2.5mm. Which of the following is a coarse pitch?

(a)	1 mm
(b)	2 and 2.5 mm
(c)	1.5, 2 and 2.5 mm
(d)	2.5 mm

18.

In a 20-degree pressure angle system, what is the value of addendum?

(a)	1 module
(b)	2 modules
(c)	3 modules
(d)	4 modules

19.

What is tooth thickness?

(a)	Circular pitch / 2
(b)	Circular pitch / 4
(c)	2 x Circular pitch
(d)	4 x Circular pitch

Showing 11 to 19 out of 19 Questions