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Explain differancnce between instrument current transformer and measuring current transformer?
Current transformer is a device used to measure the flow of current through a power system and the measured current is inputted to a protective relay system. It is used to detect system malfunction. Current transducer is a device used to measure AC and DC current based on the halt-effect technology.
Explain very large transformers are sometimes designed not to have optimum regulation properties in order for the associated circuit breakers to be within reasonable size?
I'm not sure this is true. "Regulation" has to do with how the transformer's terminal voltage behaves under different loading scenarios - under heavy load, the voltage is typically dragged down some; if the transformer regulation is "good", it will not be impacted too much. Furthermore, to offset this, many transmission to distribution transformers have load tap changers which effectively add or remove windings from the secondary side (typically), allowing manual or automatic regulation as load increases and decreases. Transmission level transformers often do not use LTC, and thus regulation is more limited (these are also usually much larger transformers). The terminal voltage could fluctuate then to +/- ~5% of nominal. Circuit breakers, therefore, must be sized for the maximum voltage expected (what I have seen spec'd is 105% nominal), and maximum fault current expected. I don't think you can under size the circuit breaker to operate on a lower voltage simply because under heavy loading voltage might be lower than ideal.
Explain current shunt negative feedback amplifier?
describe current-shunt negative feedback as applied to operational amplifiers, including derivations of the gain relation for each type of negative feedback.
Explain briefly about LVDT with working and neat diagram?
First off, LVDT stands for linear variable differential transformer. The principle of the LVDT is that the physical energy is converted into electrical signals.
What is the power factor in pure inductors explain?
The power factor (cosine of phase angle) of pure inductor is zero because the phase angle between current and voltage is 90 degrees .If the value is substituted in the formula It will be zero.
What is the difference between an IVT and CVT transmission?
CVT - Capacitive Voltage Transformer Used for Measuring Voltage & Protection purpose, It is specially used in the line side along with PLCC (Power line Carrier Communication) to block the high voltage and makes the level to acceptable form of the communication equipment. IVT - Induced Voltage Transformer Please any one explain it... By Gokulakannan E
How do you explain about transformer?
A Transformer is a static device which is used to step up(or)step down the voltage in a transforming conductor
What is the principle of transformer working Explain the working principle of transformer on no load?
Transformer is a static electrical device used to step up or step down the voltage with the help of primary and secondary windings.
Explain why cruciform shape is used in transformer core?
to reduce core reluctance..
How potential transformer works explain with circuit diagram?
A potential transformer steps the high voltage down to a level of 120 V to measure them safely and easily.
Explain would the formation of a goiter be positive or negative feedback?
Negative.
Can pv r be negative Explain?
no pressure and volume can never be negative quantities
How would you explain the childrens what is negative 3 plus5?
Explain that the negative(-3) can be moved and become a subtraction sign. -3+5=5-3
Is it possible for a coefficient of variation to be negative Explain.?
Of course it is! If the mean of a set of data is negative, then the coefficient of variation will be negative.
Will a negative number to the fifth power be a positive or a negative value explain?
Negative, because 5 is an odd number
How do you explain how a negative times a positive makes a negative?
+*-=-. Example. 3*-3=-9.
What would you say to a classmate who asks you to explain why negative 4 squared is equal to negative 16?
Yo should say that you cannot explain something that is not true.
