Given that R = 2.75 k2, VB = 3.75V and Vs = 10 sin cot V. R ΓΚΩ VB W Vs o www +Vcc + Vo -Vcc Figure Q.4(c) Schmitt trigger circuit. Based on the given information, (i) Calculate the upper threshold voltage, VUTP and the lower threshold voltage, VLTP (ii) Draw and label the transfer characteristic of output voltage, Vo versus input voltage, Vs. (iii) Draw and label properly the output voltage, Vo based on Vs applied. Assume the initial Vo= +VSAT.

Q4. Explain the operating principle of the circuit breaker and list the merits and demerits of the following circuit breakers: (10 Mark) (i) Air circuit breaker (ii) Oil circuit breaker (iii) SF6 circuit breaker (iv) Vacuum circuit breaker

STATE THE GENERAL RULES/PRINCIPLES APPLIED IN CALCULATING DPDs.

1- In a table compare between diesel power plants & gas power plants.  2- Give any five comparisons between Gas power plants and Thermal power plants

b) State six (6) examples of electrical hazard sources that can be found in home or office.

In what circumstances would ICs be required? Discuss three points.

What is mean by equipment grounding and system grounding?

q8/ choose the correct answer In DC power transmission Ultra High voltage Direct current transmission refers to the voltage level of  a. lesser than 660 kV b. less than 400 kV c. 800 kV or higher d. near to 660 kV

According to the following specifications, a single solar 295-watt solar panel has maximum power operation voltage at 24 volts. What is the maximum number of solar panels that can be used in a single string? a. 35 solar panels. b. 30 solar panels. c. 25 solar panels. d. 40 solar panels. e. 20 solar panels.