What is a back EMF?

Q: What would happen if both contactors were energized at the same time

A: What would happen if both contactors were energized at the same time?

Q: Which part of a lightning protection system is at the top of the structure? A. Ground terminal…

A: According to the question we have discuss about the lighting protection system.

Q: e) Explain the most harmful harmonics for power transformers.

A: Need to find most harmful harmonics for power transformer

Q: Explain the status flags for the operation AEH+37H

A: I have provided an explanation for 8086. This result can also be applied to 8085 ignoring overflow…

Q: Describe how attenuators are used to adjust TV signals power and also reduce interference.

A: According to the question, we need to describe how attenuators are used to adjust TV signal power…

Q: 2- What is the amount of power saving in the AM-DSB-SC, when compared to other types of AM systems?

A:

Q: 1. When is the counter EMF at a minimum?

A:

Q: What is ripple?

A:

Q: What Transient Voltage appears across the Circuit Breaker contacts at, or near Current Zero during…

A: Correct option is C) RESTRIKING VOLTAGE   As per the definition of restriking voltage  Restriking…

Q: What is Isochronous?

A: Isochronous: It means occurring at the same time. In terms of electrical engineering isochronous…

Q: How is the grounded conductor in a flat multiconductor cable 4 or larger identified

A: Using the NEC 200.6(B), the identification of the grounded conductor can be done. The following…

Q: what is the standing wave of a 75 ohm connected to 50 ohm transmission line?

A: The characteristic impedance is Z0=50 ohms.  The load impedance is, ZL=75 ohms The standing wave…

Q: What is surge impedance?

A: Surge impedance is also known as the characteristics impedance of the lossless transmission lines.…

Q: Why are ac contactor assemblies made of laminated steel

A: The three necessary mechanisms of operation of magnetic contactor are horizontal-action, bell crank,…

Q: How to wire 220volt ac at a breaker box?

A: To wire 220 V ac at a breaker box, the following steps needs to be followed: Turn off the main…

Q: What is meant by Excitation Control in a Power System

A: Given :    In the above question they are interested to know the work of the excitation control in…

Q: What are some of the protective relays found with large transformers?

A: Protective relay is used for detection of fault in electrical devices and give signal to circuit…

Q: (b) . Explain Snell's law. What. is total internal reflection? suitable diagram. Explain with

A: According to Snell's law, the ratio of the sines of the angles of incidence and refraction is equal…

Q: What is the edge of using Phase Locked Loop Demodulator rather than other FSK demodulator circuits?

A: Lock section lock, PLL is a very useful RF building block. PLL uses the concept of minimizing the…

Q: What are the possible consequences of failure of the entire DC supply system in the station

A: It is known that at  the power generation unit ,DC supply system  is responsible for source of power…

Q: E) Compare sawtooth generated PWM versus hysteresis technique. ) Explain the switching stages for a…

A: (a)  It is possible to alter both the voltage and the frequency(controlled)       It is possible to…

Q: What do you mean by cutoff voltage for JFET?

A: The JFET is the abbreviation for junction field effect transistor. There are two types of JFET…

Q: Explain the reasons for applying system grounding in electric power systems.

A:

Q: Find the percent overshoot,

A: Open Loop System (OLS)-A system having a input in the system which does not depends on the system…

Q: Q6) Explain by drawing a block diagram of a power supply?

A: Draw the block diagram of the Regulated power supply.

Q: What quantity does a phototransistor measure or sense

A: This question is about an optical electronic component called phototransistor. Basically it's a…

Q: What is a lagging voltage

A: The explanation is as follows.

Q: Compare between AC circuits and DC circuits

A: Comparison between the AC circuits and the DC circuits: In AC circuits, there is an AC source…

Q: What is light triggering method?

A: A SCR (Silicon Controlled Rectifier) also known as a semiconductor controlled rectifier is a current…

Q: Given the plot shown in the figure, what is the value of peak overshoot? jao j7= ja s-plane -3 --o4…

A: Using given pole zero plot calculator sets of the second order system.  Now using peak over shoot of…

Q: What does the DC NULL actually measures?

A: The DC null detector is a current galvanometer whose deviation is accompanied by uneven emf. It is…

Q: What is the unit E?

A: In the given question, the source voltage has a magnitude of ε Volt.

Q: What causes the depletion layer?

A:

Q: e) What causes frequency variations in the power system? What determines the direction of frequency…

A: A healthy power system always operates at a constant frequency. There are two major reasons of…

Q: How does TP4056 works? What is the purpose of red and blue lights in the components?

A: The TP4056 chip is a single-cell lithium-ion battery charger that protects the cell against…

Q: What will be the power of the signal?

A: In this case, the power of the following discrete-time signal is to be determined: xn=un

Q: Is the function linear or nonlinear

A: In this question, check the  Is the function linear or nonlinear?  The function f(t) = e5x(t)

Q: Flashing DC genreto

A: Flashing in DC Generator is completely related to the field winding of it. self excited DC generator…

Q: What is the difference between Zener breakdown and Avalanche breakdown?

A: Difference between Zener breakdown and Avalanche breakdown :

Q: 25) How can eddy current loss be minimized?

A: Eddy current loss :- eddy current losses due to eddy current. Eddy current produced if any magnetic…

Q: What is the amount of power saving in the AM-DSB-SC, when compared to other types of AM systems?

A: In the given problem, we compare the power saving in AM-DSB-SC to the other types of AM system.…

Q: Add a typical fan type load?

A: Add a typical fan type load? Assumption : We assume question is to plot torque speed characteristics…

Q: What Is setup time?

A: Setup: Particularly UPR and forceful body carriage. b: characteristics, make-up. The preparation…

Protection System

A system that protects electrical systems from faults by isolating the problematic part from the remainder of the system, preventing power from being cut from healthy elements, improving system dependability and efficiency is the protection system. Protection devices are the equipment that are utilized to implement the protection system.

Predictive Maintenance System

Predictive maintenance technologies are designed to assist in determining the state of in-service equipment so that maintenance can be scheduled. Predictive maintenance is the application of information; proactive maintenance approaches examine the condition of equipment and anticipate when it should maintain. The purpose of predictive maintenance is to forecast when equipment will fail (depending on a variety of parameters), then prevent the failure through routine and corrective maintenance.Condition monitoring is the continual monitoring of machines during process conditions to maintain optimal machine use, which is necessary for predictive maintenance. There are three types of condition monitoring: online, periodic, and remote. Finally, remote condition monitoring allows the equipment observed from a small place and data supplied for analysis.

Preventive Maintenance System

To maintain the equipment and materials on a regular basis in order to maintain those running conditions and reduce unnecessary shutdowns due to unexpected equipment failure is called Preventive Maintenance (PM).