Engineering Metrology MCQs

Question 1

Accurate centring of work mounted in an independent chuck can be determined by using a

Accepted Answer

Dial indicator

Answer

Centre gauge

Answer

Height gauge

Answer

Surface gauge

Question 2

In limits and fits system, basic shaft system is one whose

Accepted Answer

Upper deviation is zero

Answer

Lower deviation is zero

Answer

Minimum clearance is zero

Answer

Maximum clearance is zero

Question 3

Which of the following is not the angle measuring device

Accepted Answer

Angle plate

Answer

Sine bar

Answer

Bevel protector

Answer

Angle gauge

Question 4

To check the diameter of a twist drill with a micrometer, the measurement must be taken across the

Accepted Answer

Margins of the drill

Answer

Flutes of the drill

Answer

Cutting edges of the drill

Answer

Lips of the drill

Question 5

Pick out the wrong statement about gauges for internal threads.

Accepted Answer

The dimensions of Go and Not Go gauges correspond to maximum and minimum minor diameters.

Answer

The Go screw plug gauge is made to the minimum metal limit and of full form and checks the virtual effective diameter. Any error in the pitch or flank angle of screw affects the effective diameter

Answer

Not Go screw plug gauge is made to the maximum effective diameter of the screw thread cleared at the root and crest.

Answer

The plain Go and Not Go gauges are used for checking the limits of the size of minor diameter.

Question 6

Expressing a dimension as 18.31% mm is the case of

Accepted Answer

Unilateral tolerance

Answer

Bilateral tolerance

Answer

Limiting dimensions

Answer

All of the above

Question 7

In instrumentation a correction is

Accepted Answer

The revision applied to the indicated value so that the final result obtained improves the worth of the result

Answer

An error

Answer

Reading-error

Answer

Range of error-degree of correctness

Question 8

Straight edges are used to measure

Accepted Answer

Flatness

Answer

Straight length of parts

Answer

Parallelism

Answer

Perpendicularity

Question 9

IS : 919 on limits and fits specifies following numbers of grades of fundamental tolerances, and fundamental deviations respectively

Accepted Answer

18, 25

Answer

25, 18

Answer

25, 16

Answer

18, 22