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Electrical Fundamentals
1. An aircraft company has decided to replace the copper cables to the main aircraft generators onboard it's Boeing 747s with aluminium cables that are capable of carrying the same current.
a. Describe the effects on the cable with the aircraft at sea level compared to 35,000 feet. Like coefficient of expansion at sea level and on 35,000 feet, resistivity.
2. A parallel plate capacitor was originally constructed using air as the dielectric. For another application, we need to change the dielectric to Mica.
a. Describe fully how this change of dielectric material has affected the capacitor in ALL respects.
Carrier Concentrations For the calculation of semiconductor electrical properties and analyzing device behavior, it is necessary to know the number of charge carrier
transformer voltage induced in armatur of ac commentator machin in case tha field flux in sinosoidal?..
Electrical power Power P in an electrical circuit is given by the product of potential difference V and current I. The unit of power is the watt, W.
Q. Explain Digital control systems? Significant progress has been made in recent years in discrete-data and digital control systems because of the advancesmade in digital compu
A 3 phase 60 hertz induction motor has 8 poles and operates with a slip of .05 for a certain load. Compute in r.p.m. the (a)speed of the rotor with respect to the stator, (b)spe
Q. Grade of Service In loss systems? Grade of Service : In loss systems, traffic carried by the network is normally lower than actual traffic offered to the network by subscri
Q. A current i(t) = 20 cos(2π × 60)t A flows through a wire. Find the charge flowing, and the number of electrons per second that are passing some point in the wire.
Analysis of diode circuits
calculation of series DC motor
Why dummy coil is used in wave winding porpose of dc generator
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