Sree Narayana Guru College of Engineering and Technology 2005 EN2K 103B : ENGINEERING PHYSICS(B) (For ME), Improvement test - - Question Paper
Wednesday, 06 February 2013 06:00Web
Improvement test - May 2005
EN2K 103B : ENGINEERING PHYSICS(B)
(For ME)
Time: 2Hours Marks: 50
Part A: ans all ques.
1 define stress-optic legal regulations
2 discuss Laue’s experiments on X-ray diffraction and mention its significance
3 What is the significance of reverberation time in the design of an auditorium
4 find the expressions for Einstein coefficients
(4x5=20)
Part B: ans 3 ques.
5 discuss the working of ruby laser and semiconductor diode laser
OR
6 (a) What is a hologram? elaborate the special features of a hologram over a photograph?
(b) compute the energy difference in eV ranging from 2 energy levels of neon atoms of a He-Ne gas laser, the transition ranging from which outcomes in the emission of light of wavelength 632.8nm
7 describe standard time of reverberation. Derive Sabine’s formula for the standard time of reverberation. Mention the assumptions made.
OR
8 Write notes on the subsequent
(a) Radiographic method of nondestructive testing
(b) Ultrasonic method of nondestructive testing
9 Derive Bragg’s legal regulations of X-ray diffraction. discuss Bragg’s X-ray spectrometer and how will you determine the wavelength of light used
OR
10 What is piezoelectric effect? discuss with a circuit diagram, the generation of ultrasonics using a piezoelectric oscillator. elaborate the important applications of ultrasonics
Earning: Approval pending. |