In the circuit to the right, what is current supplied by the AC power supply when (a) the frequency is very small and (b) the frequency is very large?

Q: Design a lo power transformer to be used in a wind turbine for the following specifica tions: 1-…

A: To need to design a power transformer that is to be used in a wind turbine for the following…

Q: What are the laws of AC power to solve problems?

A: AC→Alternating currentIt is an electric current that continually reverses direction , atregular…

Q: What are the characteristics of an excellent DC power source? Give 3 and explain.

A:

Q: Why the tranformer rattigs are mentioned in KVA. Discuss in brief.

A: The transformer is a device which is use to transfer the power from one portion to the other…

Q: 6. Discuss the difference between direct current and alternating current?

A: Current is flow of electrical charge  These are of two type Dc current  Ac current

Q: 3. Two circuit elements in series consume 60 VAR when connected to a 120 – V, 60 – Hz source. If the…

A: Total supply voltage = 120 V. pf is 0.6 . Input VAR = 60. Input watt = 60/tan(x). So watt = 60/tan…

Q: A Buck Converter converts 24Vdc to 12Vdc with losses of 70W, and a load of 600hms. What is the…

A: Given data, Supply voltage Vs=24 V. Output voltage, Vo=12 V. Load resistance R=60 Ω.

Q: 3. A sinusoidal waveform displayed on an oscilloscope is shown in Figure 2. The 'time/cm' switch is…

A:

Q: purpose of brushes in a dc machine is__________. to change ac to dc signal to remove the losses in…

A: brushes in DC machine is placed between rorating commutator and external circuit. We will consider…

Q: Why the frequency will double when we rectify an ac input to dc output at the ripple factor ?

A: Ripple factor measures the amount of ripple content present in the waveform rectifier is a circuit…

Q: P11_a, f= 5 kHz |VR| = P11_b, f= 70 kHz |VR| P11_c, f= 100 kHz |VR| = (mV) LVR= LVR= LVR= (deg.

A: Given Data: Circuit diagram is given as, Peak input Voltage Vin, p=1 V Here, the RMS input voltage…

Q: Do we have a nonideal AC voltage source which means there is a resistance in it or only do we have a…

A:

Q: 3. What is the disadvantage of ripple voltage (Peak-Peak) in DC Supply on the electronic instruments…

A: Ripple voltage is an unwanted SC components in a electronic equipments workin on DC supply. This…

Q: I'm looking to note some key advantages and disadvantages of George Westinghouse AC current grid…

A: Here it has been asked to discuss the the main advantages and disadvantage of George Westinghouse AC…

Q: fill inthe blank : field winding has large numberofturns of thin copper wire.                  a.…

A: Correct option is Shunt. shunt field winding has large number of turns of thin copper wire.  Where…

Q: What reading would be displayed by an digital multimetre if it were switched to an AC voltage range…

A:

Q: why is the piv rating important for IS AN AC CIRCUIT THAT CONVERTS AC SIGNAL TO DC SIGNAL

A: The answer as given below steps:

Q: If the output voltage across the transformer secondary coil is Vm AC volt. a- Give a circuit to…

A: We want the output as DC value. Hence a rectifier type circuit must be present. The input AC voltage…

Q: Yoke of the DC machines collect current from the commutator and supply to the load circuit.

A: Yoke in an internal part of the DC machine

Q: A single phase full wave ac/ac converter's input voltage Vs (rms)=220 volt. The firing delay angles…

A:

Q: a buck converter, what are the benefits and disadvantages if the changes of duty cycle is drastic…

A: Duty cycle : Duty cycle in the power system is defined as the ratio of the time during which a load…

Q: Write down the Construction of an alternator with the help of diagram and write its Principle of…

A: Alternator is derived from ' alternating  ' . Alternator is an electric generator which converts…

Q: The validity of Ohm's law in AC circuits and impedance?

A:

Q: How to measure high alternating currents and high alternating voltages during the transmission and…

A: The device that is used to measure the high alternating current is known as the current transformer.…

Q: A brief explanation and introduction of how power transfer happens in AC circuits

A: The AC circuit consists of reactive loads like a capacitor and the inductor due to which there is…

Q: 4) Listen Regarding a Sine wave of an A.C. voltage (pictured below for reference), changing the…

A: Option c only correct Since charging voltage level per division will only effect the village values…

Q: 7. When power to a resistance load is controlled by full-wave SCRs with a 90° firing angle, what is…

A: In this question we need to find a load power factor of the given full wave SCR .

Q: Why is inductance terns for use in AC circuits?

A: There are various uses of inductance in AC circuits.

Q: A 200 V/100 V, 50 Hz transformer is to be excited at 40 Hz from 100 V side. For the exciting current…

A: Given, A 200 V/100 V, 50 Hz transformer is to be excited at 40 Hz from 100 V side. The exciting…

Q: AC power of 100 volts and 1 ampere enters a transformer with 2 coils and exits the transformer with…

A:

Q: In a series AC resistive circuit: O a) voltage leads current by 90°(degrees). b) current leads…

A: Option c Current and voltage are in phase

Q: WHAT IS THE POSSIBLE OBSERVATION AND CONCLUSION ABOUT SERIES–PARALLEL CIRCUIT AND DELTA WYE…

A:

Q: What is the benefit of electrical transformers if there is a load and if there is no load?

A: Transformer: Transformer is a static electrical device which is used to transfer the power from one…

Q: Explain in detail DC and AC current.

A: Direct Current Definition: DC is a unidirectional flow of electric charge. Electrons move…

Q: what is a difference between AC AND DC load line

A: Load line- Load line is a line which is drawn in a plot between current and voltage. It denotes the…

Q: why is the piv rating  important for  IS AN AC CIRCUIT THAT CONVERTS AC SIGNAL TO DC SIGNAL

A: PIV stands for Peak Inverse Voltage. Peak inverse voltage is the   maximum reverse bias voltage that…

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.