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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.
Equipment parameter data: The schematic diagrams for existing substations have to be prepared along with information of power transformer rating and numbers, impedance values,
3-phase 120 0 Mode VSI In 1200 mode VSI each thyristor conducts for 1200. At a time only thyristor one form upper group and another form group will conduct. Only th
an ideal dc generator has voltage reguiation
In an electron microscope, a beam of electrons is produced by a device called an electron gun. In the electron gun, electrons are 'boiled off' from a heated filament (which is the
Q. What do you mean by Insurance? This is done by creating a common fund out of the contribution (known as premium) from several persons who are equally exposed to the same los
DC Motor The motor which require dc supply to drive them are called DC motors DC motor consist two types of windings. a. Fields Winding b. Armature Winding
Control Charts The control chart is the fundamental tool of Statistical Quality Control (SQC). It denotes the general cause variation in which is built into a system therefore
Survey Process - issues of power supply The steps to be followed in any like survey procedure are given below. There is always a possibility of going back to any previous ste
part of dc machine
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
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