Question

In: Electrical Engineering

1)Why is there phase difference between voltage and current in an a.c. circuit ?. Explain the...

1)Why is there phase difference between voltage and current in an a.c. circuit ?. Explain the concept of power factor.

2). Discuss the disadvantages of a low power factor.

3. Explain the causes of low power factor of the supply system.

4. Discuss the various methods for power factor improvement

5)Write short notes on the following : (i) Power factor improvement by synchronous condenser (ii) Importance of p.f. improvement (iii) Economics of p.f. improvement

Solutions

Expert Solution

Manojponduru answered 8 months ago
Next > < Previous

Related Solutions

what is the phase difference in phase angle between induced voltage and current in a PMSM...
what is the phase difference in phase angle between induced voltage and current in a PMSM controlled to keep maximum torque per amp?
Consider the three basic quantities of a circuit: voltage (potential difference), current, and resistance. In general...
Consider the three basic quantities of a circuit: voltage (potential difference), current, and resistance. In general terms, describe each one in your own words and its basic characteristic/property, and can you do an analogy of these quantities with a fluid system, say a stream of water? Further, since many of you are in the medical field, can you relate a basic circuit and its components to a system of the body, maybe the circulatory system? If, what is the analogy...
Why do the voltage and current in the pickup coil cycle between negative and positive? Explain...
Why do the voltage and current in the pickup coil cycle between negative and positive? Explain in detail using Faraday’s Law. Remember, Lenz’s Law is part of Faraday’s Law! Although it will not be covered explicitly in this class, this is known as alternating current. Points to discuss: How the magnetic flux through the loop changes as the magnet rotates. Is the flux maximal when the magnet is horizontal or vertical on the screen? Why?) How this changing magnetic flux...
Why do the voltage and current in the pickup coil cycle between negative and positive? Explain...
Why do the voltage and current in the pickup coil cycle between negative and positive? Explain in detail using Faraday’s Law. Remember, Lenz’s Law is part of Faraday’s Law! Although it will not be covered explicitly in this class, this is known as alternating current. a. How the magnetic flux through the loop changes as the magnet rotates (is the flux maximal when the magnet is horizontal or vertical on the screen? Why?) b. How this changing magnetic flux works...
Explain to me the difference between the designation of Current & Non-Current Liabilities, and why is...
Explain to me the difference between the designation of Current & Non-Current Liabilities, and why is it important to understand this difference:
A battery that has a voltage of 20V is attached to a circuit. A current of...
A battery that has a voltage of 20V is attached to a circuit. A current of 4A is created in the circuit. What is the resistance of the circuit? A series circuit with made up of a 12 V battery, a 4Ω resistor, a 8Ω resistor, and a 12Ω resistor. Calculate the equivalent resistance of the circuit. B. Calculate the voltage drop at the 8Ω resistor. A parallel circuit comprised of a 24 V battery and two 48Ω resistor. Calculate...
The total impedance of the circuit. The voltage drop across the coil. The total phase constant...
The total impedance of the circuit. The voltage drop across the coil. The total phase constant of the circuit. Calculate the frequency band width. Calculate the natural frequency.
1. explain why ia an ohmic the current through the resistor is proportional to the voltage...
1. explain why ia an ohmic the current through the resistor is proportional to the voltage differnce across the resistor. your explanation must refer to the electric field
What is the difference in the voltage output of a BJT Transistor switch circuit    and...
What is the difference in the voltage output of a BJT Transistor switch circuit    and a BJT Emitter follower circuit?
1. Why don’t the short circuit and open circuit voltage produce power in a p-n cell?...
1. Why don’t the short circuit and open circuit voltage produce power in a p-n cell? 2. The power supplied by a solar cell is proportional to its surface area. Using the flux of solar energy under AM1 conditions, estimate the power a 1-cm2 solar cell will yield. State explicitly any assumption you make.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT