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1. What are the three main electrical test instruments used in troubleshooting?
2. What is the advantage of a plunger-type voltage tester?
3. A motor is tripping out on overload. The motor nameplate reveals a full-load current of 68 amperes. When the motor is operating under load, an ammeter indicates the following: phase 1 = 106 amperes, phase 2 = 104 amperes, and phase 3 = 105 amperes. What is the most likely problem with this motor?
Devise a system that will convert this temperature range into an 8-bit digital word with conversion from 00H to 01H at 200°C and from FEH to FFH at 350°C . An ADC is available with a 2.500-V internal reference. At 200°C a type K TC produces 8.13 m..
Draw a state diagram for the controller. Assume that the start signal is present for only one clock time. (Two states are sufficient.)
The project should be a design problems, a review or summary of literatures. The topic can be related to your own research, or it can be based on published papers in microelectronics circuits.
A two port amplifier has been designed to match the source and load resistances Rin = 1k ohms, Rout = 16 ohms, A = 50dB. What is the amplitude of the input signal needed to deliver 1W to the 16 ohm resistor.
What is Power Factor improvement Methods with Their advantages & Disadvantages ?
A three-phase Y- connected transformer bank (single phase) consists of three identical step-up transformers rated at 100MVA, 13.8kV:66.4kV. Each transformer has a series impedance of .0045 + j0.19-ohm referred to its 13.8kV winding.
If a voltmeter has an internal resistance of 15 kΩ, - find the current through the meter when it reads 62 V.
The kilowatthour-meter of a home is read once a month. For a particular month, the previous and present readings are as follows:
A circular loop of wire can be used as a radio antenna. If an antenna with a diameter of 18.5cm is located a distance of 2.40km away from a from a source with a total power of 57.0kW at a frequency of 100MHz
The specific resistivity of brass is 11.4 micro-ohm-cm. Compare the resistance of brass rod A and B if rod A is 1 meterlong and has an area of 2 sq. cm and rod B is ½ meter longand has an area of 4 sq. cm.
Discuss the input behavior of a short-circuited line for frequencies slightly beyond those for which the quasistatic approximation is valid.
A single phase a.c. generator supplies the following loads :- Calculate the total kW and kVA delivered by the generator and the power factor at which it works.
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