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Correct Answer : Side slip angle
Explanation : The angle of incidence in the yaw plane is known as the side slip angle. It is the angle between the direction the aircraft is travelling and the direction its nose is pointing. When the side slip angle is high the aircraft is not in a coordinated turn and hence is flying inefficiently.
Correct Answer : Option (D) : Heavy compared to normal wires
Explanation : Fiber optics weigh comparatively very low than normal wires. Wires require shielding from EMI which also adds up to the overall weight of the connectivity system. They also offer high speed data transfer and are relatively costly.
Correct Answer : Option (B) : wavelength division multiplexing
Explanation : Fibre optic data transmission use ‘wavelength division’ multiplexing whereby a single fibre can be used to transmit several channels of information as coded light pulses of different wavelengths (or colours) simultaneously. The individual data channels are then recovered from the optically mixed data by passing the light signal through wavelength selective passive optical filters which are tuned to the respective wavelengths. WDM has a very high integrity as the multiplexed channels are effectively optically isolated.
Correct Answer : Option (B) : Airships
Explanation : Non-rigid airships may be acquiring a new lease of life as long duration platforms for airborne radar surveillance systems. The airship is able to carry a large high power radar antenna within its envelope and is able to remain airborne for several days. Since the antenna could severely interfere with FBW systems FBL system was used.
