Explore topic-wise MCQs in Engineering Metrology.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Metrology knowledge and support exam preparation. Choose a topic below to get started.

1.

Type-B optical flat is tested for parallelism. What is the formula for the difference of the thickness of the flat at 2 points on the adjacent fringe? ( is the refractive index)

A. /2*(1/ ) microns
B. /4*( ) microns
C. * microns
D. *( /2) microns
Answer» B. /4*( ) microns
Discussion
2.

Which of the following is the method to test parallelism in Type-B optical flats?

A. Hawking interferometer
B. Enrico interferometer
C. Fizeau interferometer
D. Stephan interferometer
Answer» D. Stephan interferometer
Discussion
3.

Which of the following statement is true for optical flats?
Statement 1: Type-A optical flats are tested for parallelism of working surfaces.

A. nStatement 2: Flatness of working surface is tested by comparing with a master flat.
B. T, F
C. F, F
D. T, T
E. F, T
Answer» E. F, T
Discussion
4.

Which of the following is not the dimension of optical flat Type A as per IS : 5440 1969 in mm ?

A. 25 x 10
B. 50 x 30
C. 30 x 10
D. 125 x 30
Answer» D. 125 x 30
Discussion