1-State the Difference between capacitance and inductance
2- List four types of electrical source with brief description
3-What are the differences between Thevenin's equivalent circuit and Norton's equivalent circuit?
4- Assume that a sinusoidal voltage is given by v(t)= 100sin(300πt+60)V
a)Express the v(t) in cosine function
b)Find the angular frequency and phase angle
c) Find the period and the frequency of sinusoidal signal.
d)Find the peak value and the RMS value of the sinusoidal signal.
e)If the voltage is applied to a 50? resistance, find the average power delivered.
5-What sensor is used to measure the deformation of an object?
6- Given a Boolean's equation is Y= (A bar)B+A(B bar)+AB Simplify the equation and draw the logic gate.
7- State the difference between diode and LED
8- State the difference between Step-up transformer and Step-down transformer.
9- A certain resistor has the colour code of orange, red and gold. Determine the maximum and minimum current you should expect to measure when a 12V source is connected across the resistor.
10- State why superposition principle can be applied to passive D.C Circuits?
11-Discuss the electrical properties of an inductor in terms of it's voltage-current relationship.
12-A 10kW, 240V, 50 Hz single-phase cage rotor induction motor is 85% efficient and has a PF of 0.68 lagging. Calculate the motor current and the value of capacitor required to raise the PF to 0.93 lagging