# Linear and Angular Measurements - Mechanical Engineering (MCQ) questions and answers

1)   Calculate the taper angle, if 8 mm and 12 mm are the diameters of A and B balls respectively. Ball A is at a height of 25 mm from the horizontal ground surface and B at 15 mm.

a. 14.47o
b. 28.95o
c. 7.23o
d. None of the above
 Answer  Explanation ANSWER: 28.95o Explanation: No explanation is available for this question!

2)   Testing flatness or straightness of a surface is possible using

a. vernier caliper
b. micrometer
c. autocollimator
d. all of the above
 Answer  Explanation ANSWER: autocollimator Explanation: No explanation is available for this question!

3)   Match the following Group 1 items (Grades) with Group 2 items (application) and select the correct option

2. Grade II ---------------------------------- B. comparators
3. Grade 00 --------------------------------- C. inspection department
4. Calibration grade ----------------------- D. production

a. 1-A, 2-C, 3-D, 4-B
b. 1-C, 2-D, 3-A, 4-B
c. 1-B, 2-A, 3-C, 4-D
d. 1-D, 2-B, 3-A, 4-C
 Answer  Explanation ANSWER: 1-C, 2-D, 3-A, 4-B Explanation: No explanation is available for this question!

4)   Which of the following is not a type of direct measuring instrument?

a. micrometer
b. vernier caliper
c. divider
d. All of the above
 Answer  Explanation ANSWER: divider Explanation: No explanation is available for this question!

5)   Which among the following is an optical instrument?

a. angle dekkor
b. autocollimator
c. both a. and b.
d. none of the above
 Answer  Explanation ANSWER: both a. and b. Explanation: No explanation is available for this question!

6)   What is the type of instrument shown below? a. Bore gauge
b. Telescopic gauge
c. Slip gauge
d. None of the above
 Answer  Explanation ANSWER: Telescopic gauge Explanation: No explanation is available for this question!

7)   Grade 1 is used in

b. department of inspection
c. calibration of instruments
d. all of the above
 Answer  Explanation ANSWER: department of inspection Explanation: No explanation is available for this question!

8)   Which among the following is measured using four ball method?

a. Diameter
b. Length
c. Angle
d. All of the above
 Answer  Explanation ANSWER: Diameter Explanation: No explanation is available for this question!

9)   Which of the following is true?

a. Ring gauge has a taper angle of 3 Φ
b. Clinometer cannot measure angle between two adjacent surfaces
c. Clinometer uses micrometer to measure small angles
d. All of the above
 Answer  Explanation ANSWER: Clinometer uses micrometer to measure small angles Explanation: No explanation is available for this question!

10)   Which type of tolerance does a slip gauge have?

a. Unilateral tolerance
b. Bilateral tolerance
c. Both a. and b.
d. None of the above
 Answer  Explanation ANSWER: Bilateral tolerance Explanation: No explanation is available for this question!

1 2