The digital transmission of speech may be illustrated using the block diagram of Fig. 3.1.

Q#5 ( Past Exam Paper – June 2017 Paper 41 & 43 Q3 ) The digital transmissi… Read more The digital transmission of speech may be illustrated using the block diagram of Fig. 3.1.

(a) A metal surface is illuminated with light of a single wavelength λ. On Fig. 10.1, sketch the variation with λ of the

Q#4 ( Past Exam Paper – November 2017 Paper 42 Q10 ) (a)  A metal surface is il… Read more (a) A metal surface is illuminated with light of a single wavelength λ. On Fig. 10.1, sketch the variation with λ of the

The analogue signal from a microphone is to be transmitted in digital form. The variation with time t of part of

Q#10 ( Past Exam Paper – November 2017 Paper 42 Q5 ) The analogue signal from a… Read more The analogue signal from a microphone is to be transmitted in digital form. The variation with time t of part of

(a) Two metal spheres are in thermal equilibrium. State and explain what is meant by thermal equilibrium.

Q#8  ( Past Exam Paper – November 2012 Paper 41 & 42 Q3 ) (a)  Two metal sp… Read more (a) Two metal spheres are in thermal equilibrium. State and explain what is meant by thermal equilibrium.

(a) State what is meant by the frequency of a progressive wave. (b) A cathode-ray oscilloscope (c.r.o.)

Q#18 ( Past Exam Paper – November 2016 Paper 21 & 23 Q4 ) (a)  State what i… Read more (a) State what is meant by the frequency of a progressive wave. (b) A cathode-ray oscilloscope (c.r.o.)