Voltage Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Topic :: Voltage

Voltage Interview Questions

Questions Answers Views Company eMail

why voltage coil in wattmeter called as pressure coil why the pressure term is used in wattmeter?

NPCIL,

1 8569

Why we use modulus with voltage in stability equation that is P=[E][V]SIN@/X WHY VOLTAGE IS IN MODE VALUE WHAT IS THE REASON?

Bhel,

1 3318

why transmission lines traveled in high voltage?

TATA,

5 8600

We say that if voltage in a power system is increased,for a constant power the current will decrease (by P=VI). isn't this in disagreement with the ohms law(I propotional V;resistant const.).Since the resistance of transmission lines remains constant,shouldn't inc in voltage cause inc in current across the transmission line? I have read many articles across the net but still couldn't this figure this out. :( Guyz plz assist me with dis..:)..

4 5612

what is the difference between servo voltage stabilizer and general voltage stabilizer?

1 5107

why always current in some amp and voltage is 230?

2 4512

what is potetial,voltage,potential difference

2013

what is difference between voltage and potential?

3 5844

Where voltage are high and current to be interrupted is low the breaker preferred is:

2288

Why does the DC voltage needed is less than AC needed to produce corona?

TATA,

2 5141

why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer

Bhel,

4 7399

What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.

1 4290

How can ignition voltage of light increased with the help of a ballast

1 3519

what are the functions of current transducer and voltage transducer?

MEL,

1 4127

what happen as when voltage drop(or may decrease) ? in case of atomic base theory?

2024

Related Topics

Voltage

Un-Answered Questions { Voltage }

How does a Bandgap Voltage reference work?

3906

How about voltage source?

2271

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

3035

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

1800

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

2442

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.

2214

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.

2255

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

2228

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

2813

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?

2298

Formulae for calculating the transmission line losses for different voltage levels

2177

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?

2304

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

6163

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

2181

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

1848