STUPIDSID
Solve any one question fromQ.1(a,b) and Q.2(a,b)
1(a)
Differentiate three types of polarization namely-electronic, ionic and orientation polarization.
6 M
Solve any one question fromQ.1(a,b) and Q.2(a,b)
1(a)
Derive Clausius-Mossotti relation as applied to dielectric materials in static field. State clearly the assumptions made.
6 M
1(b)
Explain various factors which affect breakdown in liquid insulating materials.
6 M
1(b)
State the properties and applications of:
i) Cermics
ii) Transformer oil.
i) Cermics
ii) Transformer oil.
6 M
2(a)
Define with unit:
i) Electric dipole moment
ii) Polarization
iii) Polarizability.
i) Electric dipole moment
ii) Polarization
iii) Polarizability.
6 M
2(a)
Write short note on fibre optics with its principle of working. State clearly materials used for fibre optics.
6 M
2(b)
State the properties and applications of:
i) Porcelain
ii) SF6.
i) Porcelain
ii) SF6.
6 M
2(b)
Explain various factors which affect breakdown in liquid insulating materials.
6 M
Solve any one question fromQ3(a,b) and Q.4(a,b)
3(a)
Write a short note on Superconductivity and its applications.
6 M
Solve any one question fromQ3(a,b) and Q.4(a,b)
3(a)
Define with units:
i) Magnetic dipole moment
ii) Magnetization
iii) Magnetic susceptibility.
i) Magnetic dipole moment
ii) Magnetization
iii) Magnetic susceptibility.
6 M
3(b)
Describe properties and appliactions of Tungsten and Aluminium.
6 M
3(b)
A filament of a 230 V lamp is to be drawn from a wire of having a diameter of 0.025 mm and resistivity at 25°C is 5.65×10-6 Ω-cm. If the resistance temperature coefficient at 25°C is 5×10-3C. Calculate the length of the filament to dissipate 40 W at filament temperature of at 3000°C.
6 M
4(a)
Define the following terms along with units if any:
i) Residual flux density
ii) Coercive force
iii) Saturation.
i) Residual flux density
ii) Coercive force
iii) Saturation.
6 M
4(a)
Differentiate between hard and soft magnetic materials.
6 M
4(b)
Write properties and applications of silver and silver alloys.
6 M
4(b)
Describe properties and applications of Nichrome and Brass.
6 M
Solve any one question fromQ5(a,b) and Q.6(a,b)
5(a)
Describe with neat diagrams:
i) Carbon Fullerene and Nanobud
ii) Carbon Nano Tubes.
i) Carbon Fullerene and Nanobud
ii) Carbon Nano Tubes.
4 M
Solve any one question fromQ5(a,b) and Q.6(a,b)
5(a)
Describe with neat diagrams:
i) Nano wires
ii) Carbon clusters.
i) Nano wires
ii) Carbon clusters.
8 M
5(b)
Discuss briefly, energy bands in conductors and insulators.
5 M
5(b)
What are different types of batteries used in electric vehicles? Write their properties.
5 M
6(a)
What do you mean by Single Walled Multi Walled Nano Tubes?
6 M
6(a)
Explain with neat digram - Single Electron Transistor (SET).
7 M
6(b)
Write a short note on molecular machines.
7 M
6(b)
Explain with neat diagram, chemical reaction and applications of:
i) Lead acid battery
ii) Nickel Cadmium Battery.
i) Lead acid battery
ii) Nickel Cadmium Battery.
6 M
Solve any one question fromQ.7(a,b) and Q.8(a,b)
7(a)
Explain method of finding dielectric strength of air using sphere gap voltmeter with a neat diagram as per IS 2584.
7 M
Solve any one question fromQ.7(a,b) and Q.8(a,b)
7(a)
Explain the method of finding dielectric strength of air using sphere gap voltmeter with a neat diagram as per IS2584.
7 M
7(b)
Describe the method for measurement of dielectric strength of resins and polymers.
6 M
7(b)
With neat sketch, expalin how flux density is measured with the help of Gauss-meter.
6 M
8(a)
With neat sketch, explain how flux density is measured with the help of Gauss meter.
6 M
8(a)
Explain the step by step method of finding dielectric strength of transformer oil with a neat diagram as per IS 6798.
6 M
8(b)
Explain measurement of dielectric loss angle (tanδ) by Schering Bridge as per IS 3585-1994.
7 M
8(b)
With neat circuit diagram and phasor diagram, explain measurement of dielectric loss angle (tanδ) by Schering Bridge as per IS 13585-1994.
7 M
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