State and explain Kirchhoff's point law and mesh law.

Define resistivity of a conductor. How does it depend upon temperature? Why does resistivity of a good conductor increase with increase in temperature?

Find the current following through the 40 resistor in fig. below.
A) when E= 2V and E= 12V

State and explain Kirchhoff's current law and Kirchhoff voltage law.

What is Norton's Theorem? How do you find Norton equivalent of a circuit?

Find out Thevnin Voltage and Thevnin Resistance refer to the following circuit.

What is Phasor diagram? Draw the phasor diagrams for ac circuit with resistor, inductor and capacitor.

Write short notes on:                          [3*4 = 12]
i) Voltage divider rule
ii) Equivalent circuit
iii) Parallel resonant circuit
iv) Magnetomotive force

State and explain Kirchhoff's current law for electrical circuit

What is Norton's Theorem? How do you find Norton equivalent of a circuit?

Find out Thevnin Voltage and Thevnin Resistance refer to the following circuit

Distinguish between the mean value and root mean square value of an alternating current. Deduce expressions for the true mean value and the root mean square value of an alternating current represented by the equation i = I_o sin wt.

Write short notes on i) Magnetomotive force ii) Reluctance iii) Electromagnet iv) Permeability

What is meant by Galvanometer? Describe Kelvin's method for measuring the galvanometer resistance.

Find a general expression for the power consumed in an A.C. circuit containing LCR.

What are DC and AC current? Find the RMS value of alternating current and emf for full cycle.

 State and explain Kirchhoff's current and voltage laws

What is Norton's Theorem? How do you find Norton equivalent of a circuit?

Find out Thevnin Voltage and Thevnin Resistance refer to the following circuit

Write short notes on i) Voltage Divider Rule ii) Potentiometer iii) Magnetic Permeability

Define resistance, conductance, inductance and electric potential. Derive units of resistivity and conductivity.

Explain KVL and KCL with their limitations if any.

State the following terms:
i) Norton's Theorem   ii) Thevenin's theorem

Explain source conversion techniques. Use Source Conversion technique to find the load current I in the circuit below.

Explain Delta/Star and Star/Delta Transformation with appropriate figures and derive required equations for each conversions.

Let an alternating emf, E = E_o e^jwt is applied to the series combination of LCR as shown in the following figure.

i) Find the total impedance and its magnitude.
ii) Find the phase angle and draw the phase diagram.
iii) Find the resonance condition and resonant frequency.
iv) Find an expression for the current.

Discuss the voltage and current effect on resistors in parallel and resistors in series.

Define temperature coefficient of resistance. Find values of temperature coefficient of resistance at different temperature.

Find the values of R and Vs in the following figure. Also find the power supplied by the source.

Define Thevenin theorem. Explain how to thevenize a circuit with appropriate figures.

Explain Delta/Star and Star/Delta Transformation with appropriate figures and derive required equations for each conversions.

 Define the RMS value of an alternating current. Find the RMS value of alternating current for full cycle.

State and explain independent and dependent source.

Calculate the power dissipated in the 9-W resistor of fig, below by applying the superposition principle. The voltage and current source should be treated as ideal sources. All resistance are in ohms.

Write down the procedure how to thevenize a given circuit.

What is the relation between Thevenin's equivalent circuit and Norton's equivalent circuit?

Distinguish between the mean value and root mean square value of an alternating current. Deduce expressions for the true mean value and the root mean square value of an alternating current represented by the equation i = I_o sin ωt.

Find the procedure to determine the average value of current.

Obtain Thevenin's and Nortons's equivalent circuits at AB in fig. below:

Calculate current and voltage of the following circuits.

i)

ii)

What is the difference between Thevenin and Norton theorems?

Using Thevenin theorem refer to the circuit find IL.

What is the relation between Thevenin's equivalent circuit and Norton's equivalent circuit?

Show that the average value of ac over one complete cycle is zero, while the average value of ac during a half cycle is 0.637I₀, where I₀ is the peak value of ac.

What is a solenoid? Apply Ampere's law to find the magnetic field B that is set up in a solenoid having 'n' number of turns per unit length and carrying a current 'i₀'.

What is impedance? How to calculate the impedance of an RLC circuit? Calculate the total circuit impedance, the circuits current, power factor and draw the voltage phasor diagram.

Calculate current following circuits

What is the difference between Thevenin and Norton theorems?

Using Thevenin theorem refer to the circuit find IL

What is the relation between Thevenin's equivalent circuit and Norton's equivalent circuit?

An alternating current i is given by i = 141.4sin314t. Find the i) maximum value ii) frequency iii) time period iv) instantaneous value of current when t = 3 ms.

Explain the Wheatstone's bridge for measuring the internal resistance of a cell.

An A.C. circuit has L 10 mH, C = 10 µF, R = 10 ohm, calculate (i) Natural frequency, (ii) resonant frequency and (iii) impedance of the circuit at resonance.

Calculate current following circuits

Simplifying the following resistor network

What is the difference between Thevenin and Norton theorems?

Using Thevenin theorem refer to the circuit find I_L

What is the relation between Thevenin's equivalent circuit and Norton's equivalent circuit?

State the Ampere's Circuital rule. Apply it to calculate the magnetic field due to a solenoid.

Show that the mean value of alternating current over one complete cycle is zero but the mean value of alternating current during half cycle is .637ε₀, where ε₀ represent the peak value of alternating current.

Discuss the law of resistance. What are the effects of temperature on resistance?

Determine the currents in the unbalanced bridge circuit below. Also, determine the p.d. across BD and the resistance from B to D.

Determine the current supplied by each battery in the circuit shown below.

What are the differences between Norton's and Thevenin's theorems?

State and explain superposition theorem. Using Superposition theorem, find the current through the 40 W resistor in the circuit shown below.

A network of resistances is formed as follows as in the following figure.

ΑΒ = 9 Ω; BC = 1 Ω; CA = 1.5 Ω forming a delta and AD= 6 Ω; BD = 4 Ω and CD = 3 Ω forming a star. Compute the network resistance measured between (i) A and B (ii) B and C and (iii) C and A.

Define the RMS value of an alternating current. Find the RMS value of alternating current for full cycle.

Distinguish between series resonant and parallel resonant circuits.

Determine the current x in the 4-ohm resistance of the circuit below.

Using Node voltage method, find the current in the 3 ohm resistance for the following network.

Find the different currents flowing in the branches and voltage across 6-ohm resistor.

Using Thevenin theorem, calculate the current flowing through the 4 Ω resistor

Use delta-star conversion to find resistance between terminals 'AB'.

Explain the form factor. What is an average value of alternating emf for a complete cycle?

Determine the currents in the unbalanced bridge circuit of fig. below. Also determine the p.d across BD and the resistance from B to D.

Find the currents in all resistors by superposition theorem in the circuit shown in below. Calculate the power consumed.

Calculate the value of V_th of R_th between the open terminals A and B of the circuit shown below. All resistance are in ohms.

An alternating current varying sinusoidally with a frequency of 50 Hz has an RMS value of 20 A. Write down the equation for the instantaneous value and find this value for 0.0025 sec and 0.0125 sec after passing through a positive maximum value.

What are current and voltage divider rule? Explain it with example.

What is RMS value of an alternating emf? Show that the RMS value of an alternating emf is 0.707E₀, where E₀ is the amplitude or peak value of alternating emf.

A solenoid 0.5m long has 2000 turns. The magnetic induction near the center of the solenoid is 0.08T. What is the current in the solenoid?

What is current rule? Explain it with example.

Caculate the resistance of 1 cc of copper when drawn into a wire of diameter 0.32mm specific resistance of copper .59 X 10^-6 Ω

Write down the principle of a potentiometer.

If R₁ = 2Ω, R₂ = 4Ω, R₃ = 6Ω, determine the electric current flows in the circuit below

An alternating current i is given by i =141.4sin314t. Find the i) maximum value ii) frequency iii) time period iv) instantaneous value of current when t = 3 ms.

Explain the RMS value of an alternating current.

In the following circuit, find the value of supply voltage V so that 20-Ω resistor can dissipate 180w.

What do you understand by independent and dependent sources? Explain.

What are the advantages of voltage divider rule?

Explain the form factor. What is an average value of alternating emf for a complete cycle?

The resistivity of a ferric-chromium-aluminium alloy is 51 108 Ω. A sheet of the material is 15 cm long, 6 cm wide and 0.014 cm thick. Determine resistance between (a) opposite ends and (b) opposite sides.

Three resistors are connected in series across a 12-V battery. The first resistor has a value of 1 Ω, second has a voltage drop of 4 V and the third has a power dissipation of 12 W. Calculate the value of the circuit current.

Distinguish between series resonant and parallel resonant circuits.