1.Briefly describe the operation of the common mode LC filter of
a power supply.
2. Describe briefly with the aid of a diagram, the thermal
resistances involved in heat dissipation by a heat sink.
3. Describe briefly the EMI emission and susceptibility issues
with Power supplies of medical electronic equipment.
(TCO 1) To evaluate the financial operation and health of a
business ratio analysis is used. (1) Provide the formula for the
Acid-test (or Quick) Ratio and explain how it is computed (10
points) and (2) provide an example of how this ratio can be used in
decision-making in business. (15 points)
(TCO 5) How do governmental (environmental) constraints affect
the pricing strategy in a foreign market?
(TCO 1) Why is the understanding of society and the cultural
environment important when entering a foreign market?
Describe the principles and operations of a Solenoid and a
Relay; State the difference between a solenoid and a relay; State
the advantage and disadvantage of a solenoid and a relay.
(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%