Topic :: Voltage





Voltage Interview Questions
Questions Answers Views Company eMail

what determins the amount of voltage produced by a voltaic cell?

 1 3596

What is mean by AC voltage and DC voltage

 2 6077

if the supply voltage increased by N times, the x-section of conductor will be.........

APGenco, Electrical Tech, Ericsson, IES, Thirumalai Chemicals,

2 5307

what will happen if there is a voltage leakage or current leakage in an electrical train

 1509

what is the relation between currebt & voltage.

 8 7342

why autotransformers are not safe for supplying low voltage from a high voltage source?

 5 12136

when u step up the voltage using atransformer ,,,then what about the secondary current will it be increased or decreased ?

 1 2610

In which connection the voltage will be more , in star or delta connected motor?

 3 5584

whatis mean by voltage?

7 8215

what are the reasons of low voltage during start the DG?

Godrej, Tata Power,

1 4592

what is meant by phase &line voltage, how its differ from each other ?

 5 11242

Thyristor convertor type AVR(Automatic Voltage Regulator) is made of Thyristors(Silicon Controlled Rectifiers,SCRs). We know that output DC voltage from an SCR will not only depend upon the r.m.s. value of Input voltage applied, but also at the angle at which the input AC cycle is fired (using gate signal). If the firing angle is zero(in a simple circuit), then maximum DC output voltage will be obtained.If the firing angle is changed from 0 to 180,then maximum to minimum voltage is obtained. This property could be used to build an AVR. The firing angle proportional to Output voltage could be used to trigger the thyristor,in a closed loop manner and a nearly constant DC voltage(Average Value) can be obtained.An invertor circuitory could be utilised to get a regulated AC supply. Many other configurations can be build from thyristors to get a regulated AC supply.

 6433

what is recovery voltage & transient voltage ?

Bhel,

1 4010

what is the relation between voltage & frequency

 11 56855

what is the earth to neutral voltage(maximum and minimum) according to ieee standards

 4 7605



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Un-Answered Questions { Voltage }

How does a Bandgap Voltage reference work?

3253

How about voltage source?

1839

How do you size NMOS and PMOS transistors to increase the threshold voltage?

2546

Explain the basic circuits for a current- and voltage- clamp set-up.

1472

What types of I/O have you designed? What were their size? Speed? Configuration? Voltage requirements?

2008




I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.

1818

iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

1764

how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

1631

can we calculate the voltage level for microwave energy which is using for our mobile communication?

2340

Is it possible to calculate a voltage for microwave energy generating in oven? Is there any formula relating frequency and voltage and it should be independent of speed?

1831

Formulae for calculating the transmission line losses for different voltage levels

1624

Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?

1796

What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

5594

What is the difference between Static and servo controlled voltage stablizer?

1647

What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?

1422