Electrical Engineering Answers

Suppose we have a GI Pipe of diameter 50mm or 0.05m with the following data: show complete solution

GI Pipe Roughness = e = 152 x 10^-6 m

Inside Diameter of Pipe = 55mm = 0.055m

Density of Water = 1000 kg/m3

Viscosity of water = 9.554 x 10^-7 m2/sec = 0.000001 m2/sec

Flow Rate = Q = 50gpm = 0.003m2/sec

Pipe Frictional Factor = f = ?

Analyze the Resistance-Inductance-Capacitance (RLC) circuit in Figure 3. By using the 

knowledge of circuit laws and techniques, determine the voltage 

V

o

 in polar form. 

(Hint: Can use one of these techniques i.e. Nodal Analysis, Loop/Mesh Analysis, 

Thevenin Theorem and Norton Theorem).

Analyze the Resistance-Inductance-Capacitance (RLC) circuit in Figure 2. By using the 

knowledge of circuit laws and techniques, determine the current 

I

o

 in polar form. (Hint: 

Can use one of these techniques i.e. Nodal Analysis, Loop/Mesh Analysis, 

Superposition, Source Transformation, Thevenin Theorem and Norton Theorem). 

Show that the energy level of an atom is decreasing according to

the number of electron shell. Draw the electron shell vs energy curve

including calculations.

Determine the energy (eV) of a photon having a wavelength of

x A0

. Where x is the summation. You

have to calculate your value of x=2+1+9+1+5+2+7+2=29. Find the

electron shell where the valence electrons are exist. What type of

material is it?

Calculate the temperature at which there is a .02 probability that

a state 1.2 eV above the valence band will not contain any positive

charge carriers. Assume that the Fermi level energy of a particular

material is 5 eV from valence band and the electron in this material

follow the Fermi-Dirac distribution. The band gap energy is 8 eV.

Draw the energy level diagram mentioning different energy level.

Derive the equation of hole concentration of extrinsic material in

terms of electron concentration of intrinsic material. Where the all

symbols have their usual meanings.

A cell reaction is given by , A+B ----- A+B. Calculate the E° cell and number of electrons n involved in cell reaction. Given that concentration ratio of [A] to [B] is 0.1 and cell shows an emf of 1.13006 v at 30°C and 1.13105 v at 40°C.