Explain the working principle of fuse and MCB.
10 a]Explain the working principle of fuse and MCB. Solution : Fuse: An Electric Fuse is a protective device which interrupts the flow of excessive current in an Electric circuit.…
Category solved model papers
A consumer has a maximum demand of 200 kW at 40% load factor. If the tariff is Rs. 100 per kW of maximum demand plus 10aise per kWh Find the overall cost per kWh.
9 c]A consumer has a maximum demand of 200 kW at 40% load factor. If the tariff is Rs. 100 per kW of maximum demand plus 10aise per kWh Find…
What are the desirable characteristics of a tariff and explain two part tariff.
9 b] What are the desirable characteristics of a tariff and explain two part tariff. Solution: A tariff must have following desirable characteristics − Simplicity -The tariff should be…
What is electric power supply system? Draw a single line diagram of a typical a.c power supply scheme.
9 a]What is electric power supply system? Draw a single line diagram of a typical a.c power supply scheme. Solution : Electrical energy is generated at generating stations which are…
Demonstrate that two wattmeters are sufficient to measure power in a three phase balanced star connected circuit with the help of neat circuit diagram and phasor diagram.
3 a]Demonstrate that two wattmeters are sufficient to measure power in a three phase balanced star connected circuit with the help of neat circuit diagram and phasor diagram. The W1…
How back emf regulates the armature current in a D.C. Motor? Explain with relevant equations.
5.B] How back emf regulates the armature current in a D.C. Motor? Explain with relevant equations. When the Armature of D C motor starts rotating and the armature conductor cuts…
Explain the principle of operation and construction of a dc generator.
5.A] Explain the principle of operation and construction of a dc generator. Working principle of D.C.Machine as a generator: It is based on the principle of dynamically induced e.m.f .…
Deduce the relationship between the phase and the line voltages of a three-phase star-connected system.
3.C] Deduce the relationship between the phase and the line voltages of a three-phase star-connected system. Consider a balanced star-connected load as shown in fig. The three phase voltages are…
Develop an equation for the power consumed by an R-L series circuit. Draw the waveforms of voltage, current, and power.
4.A] Develop an equation for the power consumed by an R-L series circuit. Draw the waveforms of voltage, current, and power. Answer:- Circuit draws a current I then there are…
Demonstrate that, two wattmeter’s are sufficient to measure power in a three phase balanced star-connected circuit
3.A) Demonstrate that two wattmeters are sufficient to measure power in a three-phase balanced star-connected circuit with the help of a neat circuit diagram and phasor diagram. Answer;– If W1…