Related Questions

"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:
A Fresnel reflection
B Fresnel refraction
C Snell's law
D None of these
As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it
A Lies perpendicular to the magnetic flux
B Lies in a magnetic field
C Cuts magnetic flux
D Moves parallel to the direction of the magnetic field
Who discovered electromagnetic induction?
A Heinrich Hertz
B John Lewis Hall
C André-Marie Ampère
D Michael Faraday
A wound rotor induction motor is preferred, as compared to squirrel cage induction motor, when major consideration is
A Slop speed operation
B High starting torque
C Low windage losses
D All of the above
Which of the following allows devices on one network to communicate with devices on another network?
A multiplexer
B gateway
C t-switch
D modern
E None of the above
Devices on one network can communicate with devices on another network via a
A file server
B utility server
C printer server
D gateway
E None of the above
Nuclear Reactors are based on which of the following phenomenon?
A Magnetic confinement of Plasma
B Nuclear Fusion
C Controlled Nuclear Fission
D None of the above
Induction heating process is based on which of the following principles?
A Thermal ion release principle
B Nucleate heating principle
C Resistance heating principle
D Electromagnetic induction principle
Endoscope, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon of _______
A total internal reflection
B interference
C diffraction
D polarization
Which one of the following devices is specially designed to forward packets over the internet to specific ports based on the packet's address?
A Specialty
B Switching hub
C Port hub
D filtering hub

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