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Description :

What is the ripple voltage?

Answer :

Ripple voltage is the small variations in Dc voltage that remain after filtering in a power supply.

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147 views 3 answers
Description :

Which device use to convert DC to AC?

Answer :

Rectifier

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7.4k views 18 answers
Description :

Answer :

R=V÷I R= Resistance value(ohm) V=Potential different between two point(volt) I=Current(Amp)

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201 views 2 answers
Description :

Which color wire is neutral?

Answer :

Black but I think it depends with the place.

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212 views 3 answers
Description :

What causes stator failure?

Answer :

Stator faliur due to moistur. Due to priodically heatup of winding.

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150 views 4 answers
Description :

What is meant by embedded Linux?

Answer :

Linux is the operating system if we use this operating system in embedded system devices then it is known as embedded Linux. Linux is open source and free.

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64 views 1 answer
Description :

How does a capacitor improve power factor?

Answer :

Every circuit are usually more inductive than capacitive.it means that the current lags by voltage at small angle.hence we have to compensate this situation so we use Capacitor then this lag is compensate ... angle becomes low and the value of cos(phase angle) is increase and hence power also max.

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144 views 1 answer
Description :

what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?

Answer :

the total capacitace when connected in parallel Tc=total capacitor c1=c2=c3=0.5uf Tc=c1+c2+c3 Tc=1.5uf

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120 views 3 answers
Description :

What is the difference between forward and reverse bias?

Answer :

Forward bias is a PN junction bias which allows current to flow through the junction. Forward bias decreases the resistance of the depletion layer. Reverse bias is a PN junction bias that allows only ... Positive polarity on the n-type material and negative polarity to the p-type material.

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260 views 3 answers
Description :

Answer :

Current flow is like water, water flows from higher level to lower level. Same thing with current, current flows from higher voltage to lower voltage level. The flow of current is in opposite direction of the electron, electron flow from -ve to +ve and current flow from +ve to -ve.

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99 views 1 answer
Description :

Answer :

Excessive high voice signal may cause overmodulation. Modulating component greater than carrier may cause overmodulation. Setting the gain of the microphone too high may cause overmodulation.

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64 views 1 answer
Description :

Answer :

notes.txt (18 kb) I added extra knowledge in this file.I also attach my programs. If any doubts ask me. If any doubt on socket please let me know. I know little bit English knowledge. If any spell mistake and grammar error sorry sorry.

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297 views 2 answers
Description :

Answer :

There are three different host/target architecture for embedded Linux.Linked setupRemovable storage setupStandalone setup1. Linked setup :In this host/target architecture, the host and ... cross-platform development environment.The target contains bootloader, kernel, and root filesystem.

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81 views 1 answer
Description :

Answer :

Linux Kernel Architecture

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92 views 1 answer
Description :

Answer :

There are two main types of task scheduling algorithm in Real-Time Operating Systems (RTOS).1. Rate Monotonic Scheduling (RMS)2. Earliest-Deadline-First (EDF)Rate Monotonic Scheduling ( ... shortest period process and so on.Rate Monotonic Scheduing do not support non-periodic processees.

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97 views 1 answer
Description :

List and explain the various functions supported by Linux/RTLinux.

Answer :

Various functions of RTLinux is as follows: Interrupt handling functions

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95 views 1 answer
Description :

Answer :

Various features of Linux that are used in embedded systems are as follows : Linux is multiuser operating system. Linux is open source and free. Linux can be ... Linux supports handling of errors. Real-time Linux supports the group scheduling functions.

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118 views 1 answer
Description :

Answer :

The potential energy of water is coverted into kinetic energy by flowing it from height and with the help of k.e. Turbines are rotate at particular speed it means the k.e. Of water is again ... simply define the hydro power plant as it give the conversion of P.E OF water into electrical energy

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114 views 2 answers
Description :

Working principle of a generator

Answer :

converts mechanical energy to electrical energy by application of Lenz law which sates;a current carrying conductor experiences a magnetic effect arrount it. If the rotor of a generator is a magnet, ... (flemings right hand rule) current will be induced in copper windings according to Faraday law.

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597 views 3 answers
Description :

What factors affect resistivity?

Answer :

1)type of material 2)temperature 3)length and area of cross section of conductor

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67 views 1 answer
Description :

What are the color codes on a resistor?

Answer :

black   yellow   gold    red     green     blue

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116 views 3 answers
Description :

what is diode ?

Answer :

Semiconductor device. That allows flow of current in one direction

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169 views 2 answers
Description :

What is the EMF equation of the transformer?

Answer :

E1 =2(3.142)fN1 (flux)1E2 =2(3.142)fN2(flux)2

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151 views 1 answer
Description :

What is the voltage in 3 phase line?

Answer :

between 430 to 440 v

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270 views 4 answers
Description :

What is the definition of wind energy?

Answer :

Motion of atmosphere of earth is called wind and its kinetic energy is called wind energy

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104 views 1 answer
Description :

What are the advantages and disadvantages of tidal power?

Answer :

Free of costPollution freeLong life Less maintenance

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127 views 1 answer
Description :

What are the advantages and disadvantages of wave energy?

Answer :

AdvantagesFree from pollutionAvailable for every timeThe water can reuse as drinking purposeDisadvantageMore costLarge maintenanceDifficult to constructAquatic life get affected

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140 views 2 answers
Description :

What are the advantages and disadvantages of solar energy?

Answer :

Free of costRenewable energyInextable solar energyLow energy densityHigh capital costMaintenance cost highDepends on weatherNeed to direction tracking

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103 views 1 answer
Description :

What are the disadvantages of using solar energy?

Answer :

High installation costEnergy density is depend on weatherSo it is low Not suitable in all areasMaintenance cost high

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148 views 1 answer
Description :

What are the advantages of hydroelectric power?

Answer :

It is free from pollution It requires less labour to supervision Here water can use again and again

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224 views 2 answers
Description :

What is the charge and mass of an electron?

Answer :

Charge on electrons is 1.6022*10-19CAnd the mass of electrons is 9.109*10-31 kg

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101 views 1 answer
Description :

What is the difference between renewable and nonrenewable energy sources?

Answer :

Renewable energy sources are non-perishable, and Non-renewable energy sources are perishable sources. Non-Renewable energy sources are like  coal, oil,nuclear fuel etc. Renewable energy sources are :- wind, solar, tidal, Geo thermal etc.

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302 views 2 answers
Description :

What are the different sources of renewable energy?

Answer :

Solar Wind Tidal Geothermal

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109 views 1 answer
Description :

Why transmission voltages are high?

Answer :

If current is high then I2R losses will be more .If I2R losses is more then heat generated is more. By heat or increasing temperature resistance will also be increase which will decrease ... voltage we are decreasing current which is advantageous. That's why transmission voltages is high.

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129 views 2 answers
Description :

What is electric power generation transmission and distribution?

Answer :

Generation: it wrong word at here.because it is no generation it is conversion of one form of energy into electrical form.it may by using any type of energy. Transmission is just to ... place to other by providing some modifications And distribution means use of this energy for any purpose.

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131 views 1 answer
Description :

What are the speed control methods of dc motor?

Answer :

Field control of DC motor Armature control of DC motor

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158 views 2 answers
Description :

How does an electric motor works?

Answer :

In the electric motor there are two types of part 1)moving and 2)stationary In stationary part containing field winding whis use to provide uniform maganetic field it at inner side of yoke In moving ... on it and this force is from all direction we can say it is torque.and motor armature rotates

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110 views 1 answer
Description :

What are the advantages of using Linux?

Answer :

Advantages of Linux are as follows :Linux is open source and free.Linux Is multiuser and multitasking operating system.Linux is the stable operating system.Linux is reliable.Linux can be modify according to requirements.Linux is the secure operating system.

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82 views 1 answer
Description :

What is a hard real time system?

Answer :

If the real-time systems have minimum interrupt latency and task deadline with prescribe time limits then it is known as hard real-time systems.  If these two requirements meet in real time systems but not always then it is known as soft real-time systems.

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109 views 1 answer
Description :

What is the purpose of a capacitor in an AC circuit?

Answer :

Every AC supply is not ideal AC it contains DC component so to provide restriction to DC component in supply we have to use Capacitor

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164 views 1 answer
Description :

Do capacitors in parallel have the same voltage?

Answer :

Not same but we will get addition of both values when capacitors are connected in parallel...

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296 views 8 answers
Description :

reactive power is greater in load side compare to generator what will happen?

Answer :

VI*sin()

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150 views 2 answers
Description :

How do you know the voltage of an LED?

Answer :

After connecting led to a DC source we can measure the voltage of led by connecting a voltmeter across it.  But voltage rating of the led is given by the manufacturers. Or we can ... in the market For more doubts connect with me in linkdin [email protected] 

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141 views 2 answers
Description :

Can transformer convert AC to DC?

Answer :

No, Transformer cannot convert AC to DC.

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3.0k views 9 answers
Description :

What is the voltage of a red LED?

Answer :

A red led requires 2v to light. LEDs requires different amounts of voltage ranging between 1.8 and 3.3 depending on the intensity and color of the Led.

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175 views 4 answers
Description :

Transformer generally rated in KVA

Answer :

The power of transformer is apparent power because it has no power factor and it is the product of voltage and current.

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152 views 2 answers
Description :

what are the three different types of Electric power?

Answer :

Real,reactive,apparent power

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119 views 2 answers
Description :

Why a single phase motor is not a self starting motor

Answer :

The motor mechanical degree 360 degree this must covered revolving field so single phase to starting need starting winding with 90 degree to main winding

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200 views 7 answers
Description :

If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?

Answer :

128 volts ,2048 watts

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114 views 2 answers
Description :

what are the significance of kernel in RTOS ?

Answer :

In every RTOS there is the kernel. The kernel is the core supervisory software. The kernel provides minimal logic. Scheduling is also provided by the kernel. The resource- ... device managment service.RTOS kernel has interrupt management service.RTOS kernel has memory management service.

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57 views 1 answer
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