(a) Describe the principle of operation of
(i) Klystron amplifier
(ii) Travelling wave tube (TWT) amplifier.(b) A parabolic reflector is used to receive a satellite signal
of 4 GHz. If the beamwidth of the device is 2.50(i) find the diameter of the parabolic reflector.
(ii) calculate the gain of the device assuming that the efficiency
factor is 50%
1. (a) With the aid of a labeled sketch, describe an apparatus
for the generation of x-rays.
(b) With the aid of labeled sketches, describe the three primary
physical mechanisms for the absorption of x-rays in solids.
(c) Make a sketch of a typical x-ray spectrum generated by a
hospital apparatus, labeling three primary features of the
spectrum.
(d) For an x-ray apparatus containing a molybdenum target of
atomic number, z = 42:
(i) What is the wavelength for the...
With the aid of a labeled sketch, describe an apparatus for the
generation of x-rays. [2] (b) With the aid of labeled sketches,
describe the three primary physical mechanisms for the absorption
of x-rays in solids. [2] (c) Make a sketch of a typical x-ray
spectrum generated by a hospital apparatus, labeling three primary
features of the spectrum. [2] (d) For an x-ray apparatus containing
a molybdenum target of atomic number, z = 42: (i) What is the
wavelength for...
a. With well labeled diagrams, list and describe the function of
the various parts of an analog and a
digital multimeter
b. In your own words, explain how the following electronic
components can be tested using a
multimeter. Also draw their circuit symbols
LED Resistor Transistor
Battery Capacitor Diode
Fuse Inductor Switch
Procedure Muller-Breslau principle to sketch the influence lines
for
[A well written explanation if possible would be
appreciated]
1. The Vertical Reaction at A
2. The Shear
3. The Moment
Using a well labeled diagram and words that refer to and
explain that diagram to describe the four steps necessary for a
monopolist to select its price and output to maximize profits in
the short run?