PRECISION INSTRUMENTS MCQ

 

1) The least count of vernier caliper in metric system is . . . . . . .

 

0.02 mm

0.01 mm

0.001 mm

0.2 mm

Correct Answer (A)

 

2) In vernier caliper the value of each division of the main scale is . . . . . .

 

0.5 mm

0.49 mm

1 mm

0.02 mm

Correct Answer (C)

 

3) The least count of vernier caliper in which 24 mm main scale divisions are provided into 25 equal division in the vernier scale will be . . . . .

 

0.05 mm

0.02 mm

0.25 mm

0.04 mm

Correct Answer (D)

 

4) In vernier caliper the value of each divisions of the vernier scale is . . . . . . .

 

0.5 mm

1 mm

0.01 mm

0.02 mm

Correct Answer (D)

 

5) In which part of vernier height gauge is used for the datum from which the measurement is taken?

 

The base

The beam

The vernier scale

Above the scriber point

Correct Answer (A)

 

6) In which part of vernier height gauge, the main scale divisions are graduated?

 

The slider

Beam

Base

Fine setting device

Correct Answer (B)

 

7) In vernier bevel protractor the one degree is divided into how many vernier divisions?

 

25

12

20

10

Correct Answer (B)

 

8) Find the angular measurement of the vernier bevel protractor from the reading given below. a) Main scale division = 45°, b) Vernier scale division = 4 division (Least count = 5 minute)

 

45°25′

45°20′

45°15′

None of the above

Correct Answer (B)

 

9) In vernier dial caliper which part has pinion gear?

 

Base

Beam

Dial

The vernier plate

Correct Answer (C)

 

10) In metric vernier dial caliper, the beam move the distance in one rotation of dial is . . . . .

 

5 mm

2 mm

1 mm

3 mm

Correct Answer (A)

 

11) The least count of vernier dial caliper is . . . .

 

0.05 mm

0.5 mm

0.02 mm

0.01 mm

Correct Answer (A)

 

12) In micrometer the anvil portion is made of . . . . . . . . .

 

High speed steel

Alloy steel

High carbon steel

Steel

Correct Answer (B)

 

13) In metric micrometer, the pitch of the spindle thread is . . . . . . . .

 

1 mm

0.1 mm

0.05 mm

0.5 mm

Correct Answer (D)

 

14) The face of anvil and spindle of outside micrometer is made of . . . . . .

 

Tungsten carbide

Aluminium alloy

Cast iron

Steel

Correct Answer (A)

 

15) The overall length of an inside micrometer must be set for . . . . . . .

 

The minimum range of the micrometer only.

The maximum range of the micrometer only.

Both maximum and minimum range of micrometer.

Both maximum and minimum range of micrometer with handle range.

Correct Answer (A)

 

16) When measuring bores, the inside micrometer should be set for the . . . . . . . . .

 

Largest value

Smallest value

Medium value

Average value

Correct Answer (B)

 

17) The least count of vernier micrometer is . . . . . . . .

 

0.1 mm

0.01 mm

0.001 mm

0.0001 mm

Correct Answer (C)

 

18) What is the use of telescopic gauge?

 

Measure depth

Measure external dimension

Measure angular dimension

Measure size of holes, slots

Correct Answer (D)

 

19) Why precision instruments are madesteel?

 

Durability

Cheaper in cost

Surface finishing is fine

Least coefficient of expansion

Correct Answer (D)

 

20) Which instrument is used to magnify small variation in sizes by means of pointer on a graduated dial?

 

Vernier micrometer

Dial vernier caliper

Inside micrometer

Dial test indicator

Correct Answer (D)

 

21) Which precision instrument is used forcomparing and determining the variation inthe sizes of the component?

 

Comparators

Micrometer

Vernier bevel protector

Dial test indicator

Correct Answer (D)

 

22) Which comparator is used in mass production?

 

Mechanical

Pneumatic

Optical

Electronics

Correct Answer (B)