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 nearly all voltages are in the multiples of 11?

5 9903

for ac networks if the voltage wave form is V=Vm sinwt here the voltage Vm=230 for the frequency 50hz then the time period is 0.02 sec then for the time period 0.12 sec what is the voltage

4 19005

Name different types of circuit breakers and their voltage ratings?

NTPC,

11 39931

When the mechanical number is one, voltage is called

RRB,

2 5268

voltage ratings of HT and LT power cables

2569

what is the suitable voltage of transmission line to transmit 10000w power through 250 km. (a)11kv (b)33kv (c)66kv (d)132kv ]and please tell me whats the logic behind it

ONGC,

7 21011

why current increases when voltage decreases in ac system

10 27961

What is the secondry voltage of 420kV Current Transformer , the rated current is 2600A

6 8007

If single phase voltage level is 230V than why three phase voltage level is not 660V ?, but it is only 440V.

BSNL, DOS, EFS, HMT, L&T, TCS, ThyssenKrupp,

16 74482

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?

2261

3. What is Impedance Voltage in Transformer?

KESC, L&T, Torrent Power,

16 113192

why knee point voltage should be high in Ct for differential protection

NTPC,

1 5620

some times voltage does not built in small generators why ?

2 4386

what is the highest transmission voltage in india???

Bhel, EIPL, Engineering, Jindal,

49 58889

What is the relation between current and voltage?

13 15420

Related Topics

Voltage

Un-Answered Questions { Voltage }

How does a Bandgap Voltage reference work?

3848

How about voltage source?

2214

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

2971

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

1744

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

2391

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.

2170

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.

2210

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

2182

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

2758

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?

2258

Formulae for calculating the transmission line losses for different voltage levels

2117

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?

2261

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

6089

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

2130

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

1812