please explain in detail in one page UPS(uninterrupted power supply ) redundancy impact on cable dimension and Automatic transfer switches.in power design.

Q5
(a) Briefly explain power system stability

Is it reasonable to assume that, as battery technology continues to improve, electric vehicles will have longer and longer ranges? Will these advancements continue on for many years? Will EV ranges get way better than those of internal combustion engine vehicles with time? Explain.

please explain in depth during power design the impact of changing distance from UPS to each server room for power design. explain the impact of voltage drop because of this change.

1. Explain the time constant and its formula derivatives!
for R-L circuit
for R-C circuit
for R-L-C circuit
give step by step how to get he formula,( not only the formula.)

2. Draw and explain the simple triangle wave generator circuit!
3. Find out and explain how the LPF and HPF circuits work with capacitors!
4. explain how the capacitors and inductors work as clearly as possible and give an example of the application

a. For an induction motor, differentiate between synchronous speed, rotor speed and slip speed.
b. State the two basic types of construction used for the rotors of induction motors. Which is the
most rugged and explain why.
c. Draw full equivalent circuit for one phase of an induction motor with all parameters labelled
and named.
d. Draw and explain power flow diagram of 3 phase induction motor.
e. Mention four (4) components of induction machine. Explain briefly the function of each of
the components.
f. Mention three (3) parts of induction motor.
g. Briefly explain the function (s) of each the parts stated in 1f.

Derive the input impedance of the transmission line of Z0, length ‘l’ and terminated with Zl.

A30 MW, 37.5 MVA 33KV, star connected alternator is protected by a circulating current protective scheme using 600/ 1A CTsand (unbiased ) relays set to operate at 10%t of their rated current (IA) .(a)if the earthing resistor is 90% based on the machine's rating ,estimate the %age of the stator winding which is not protected against an earth fault . (b) If it is required to protect 90% of the winding ,estimate the value of the earthing resistor in ohms and percent based on machine rating .( draw the scheme in star and Delta connection ).

an L band radar operating at 1.25GH uses a peak pulse power of 3MW and must have a range of 185.2km for objects whose radar cross section is 1m^2. If the minimum receivable power of the receiver could have , assuming it to be full paraboloid with k= 0.65?

Y(t) = 4sin(-120 pi t) cos(-200 pi t) sin(-200 pi t)

Find all frequency responses of Y(f) and F{y(t)}

Find frequencies if y(t) is sampled at fs=40 and fs=100

Pllt magnitude and phase response of F{y[n]} where the range of n is -2pi to 2pi

Derive the expression for RLC parallel circuit. Compare the series and parallel RLC circuit and discuss the impact of power factor with phasor diagram.

MATLAB: Create your own problem in words that use loop and selection statements in the same problem. Create a problem that has a somewhat practical, real-life application like entering your PIN code at an ATM, and then after 4 incorrect tries, you are locked out of the ATM. Or create a problem based perhaps upon a physics or chemistry lab.  

The problem should require the use of a WHILE loop, a FOR loop and a minimum of 3 selection statements [IF].

1)Name 4 physical phenomena that light can have on some devices, so these devices can be used as light sensor.

2)What is the LDR sensor and what is the effect of light on this device?

3)What is the main difference in structure of PIN Photodiode and standard PN photodiode (photovoltaic cell)? What is the advantage of PIN over PN?

4) Which kind of sensors, is the characteristics of the PIN photodiode similar to?

5) If we increase voltage in a bulb, its temperature rises due to two reasons. Mention these two reasons.

In a line to line fault and in a double line to ground fault, how can I calculate voltages: V1, V2, Vo and Va,Vb, Vc. Write formulas please!

a) Water makes life possible. The cells of your body could not function without water in which to dissolve essential biological molecules. What electrical properties of water make it such a good solvent? b) When a credit card is “swiped” through a card reader, the information coded in a magnetic pattern on a back of the card is transmitted to the card holder’s bank. Why? Is it necessary to swipe the card rather than holding it motionless in card reader slot? Which of the Maxwell’s equation explains how a credit card reader works? c) Is it possible to have a purely electric wave propagate through empty space which is a wave made up of an electric field but no magnetic field? What about purely magnetic wave, with a magnetic field but no electric field? Please explain your answer by using Maxwell’s equation concept