Questions №1 Constant current linear electric circuits

Worked out by: Sharofov S.
Head of “EEE” Department: Usmonov Sh.
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QUESTIONS №11
1. Three-phase circuits:
(system, energy source, EMF, phase shift, phase, line, consumer, generator, transmission line, rotor, stator, induction, symmetrical, EMF expression, sequence, vector diagram, star, triangle, line and phase voltage, relationship, neutral, Kirchhoff's laws, sum, symmetrical consumer)
2. The load across a battery consists of two resistors, with values of 15 Ohm and 45 Ohm connected in series. Draw the circuit diagram. What is the total resistance of the load? What is the voltage of the battery if the current in the circuit is 0.1 A?
3. The angular frequency of the alternating current is shown in s^-1. Determine the frequency and period of that current


Worked out by: Sharofov S.
Head of “EEE” Department: Usmonov Sh.
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QUESTIONS №12
Transformers:

1. 
   (transformation, power line, nominal, current, magneto conductor, magnetic flux, electric state, coefficient, magnetic state, operating current, direct operation, external, real, short circuit, diagram, efficiency, three-phase, o measurement, electrical connection)
   
2. 
   A lamp having a resistance of 10 Ohm is connected across a 15 V battery. What is the current through the lamp? What resistance must be connected in series with the lamp to reduce the current to 0.5A?
   
3. 
   Three resistors, whose values are 35 , 45 , and 85 , are connected in parallel across a 35 V battery. What is the current through the 35  resistor? Draw the circuit diagram, find the power in each resistor