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A direct motor is developing 90.6kW at a speed of 2000r/min. The motor is connected to a 480V supply. The cost of electrical energy is 45.4c/kWh and the efficiency of the motor is 86.4%. Calculate the torque available at the shaft of the motor

With the technology scaling and process improvement, do you think that existing CMOS (complementary metal-oxide semiconductor) will be able to exist in future?

charging and discharging characteristics of DC

(a) Here is the information about the circuit.

Capacitor = 100 nF , Resistor = 47 kΩ ,Supply voltage = 5 V

Charging characteristic for a series capacitive circuit:

v=v(1 − e−t/RC)

Investigate what the other terms in this expression mean.

Calculate the time constant for the circuit.

Use a spreadsheet to plot the charging curve over the range 0 to

20 ms (milliseconds).

Investigate the meaning of ‘time constant’ and from your graph

estimate a value. Compare this with your calculated one.

Differentiate the charging equation and find the rate of change of

voltage at 6 ms.

From your graph measure the gradient at 6 ms and compare this with

the calculated value.

(b) Now investigate the discharging characteristic of the circuit but with a 22 kΩ resistor

fitted.

Calculate and estimate the rate of change of voltage when t = T.

(a) Here is the information about the circuit.

Capacitor = 100 nF , Resistor = 47 kΩ ,Supply voltage = 5 V

Charging characteristic for a series capacitive circuit:

v=v(1 − e−t/RC)

Investigate what the other terms in this expression mean.

Calculate the time constant for the circuit.

Use a spreadsheet to plot the charging curve over the range 0 to

20 ms (milliseconds).

Investigate the meaning of ‘time constant’ and from your graph

estimate a value. Compare this with your calculated one.

Differentiate the charging equation and find the rate of change of

voltage at 6 ms.

From your graph measure the gradient at 6 ms and compare this with

the calculated value.

(b) Now investigate the discharging characteristic of the circuit but with a 22 kΩ resistor

fitted.

Calculate and estimate the rate of change of voltage when t = T.

calculate the factor of safety in operation for a component subjected to combined direct and shear loading against given failure criteria

assume that the body can be

modeled as a simple resistive element. Assuming the

electrodes are identical, draw the electrical circuit model

of the impedance seen by the impedance measurement

system. Find an equation of the impedance as a function

of s (recall that a resistor of value R has an impedance ZR

= R; a capacitor of value C has an impedance ZC = 1/(sC)).

modeled as a simple resistive element. Assuming the

electrodes are identical, draw the electrical circuit model

of the impedance seen by the impedance measurement

system. Find an equation of the impedance as a function

of s (recall that a resistor of value R has an impedance ZR

= R; a capacitor of value C has an impedance ZC = 1/(sC)).

In the optical communication systems that are in operation today, one uses laser diodes (LD) with λ0≈1550 nm having a spectral width of about 2 nm. [ Dm = 21.5 (ps/km-nm)] Thus, for a 1-km length of the fiber find the material dispersion τm

An electromechanical voltmeter ( range 0-100V) with zero error after calibration has a pointer bias of + 0.5V ( due to transportation). a) If the voltmeter reads 80V what is the absolute error (if such), of measurement with the voltmeter? b)What are the realtive and reduced errors ( if such)?

if C2 went short circuit explain how this would affect the output on the audio amplifier

How can I show that:

1 - the observable part of a controllable system is controllable?

2 - the controllable part of an observable system is observable?

1 - the observable part of a controllable system is controllable?

2 - the controllable part of an observable system is observable?

On the attached graph paper, sketch the Bode magnitude and phase plots of the following transfer function: