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Why does the magnetizing curve of shunt generator tend to become horizontal after a certain value of field current?
The magnetizing curve of a shunt generator becomes horizontal after a certain value of field current due to magnetic saturation of the iron core. As the field current increases, the magnetic flux also increases, but once the core reaches saturation, additional increases in current result in only marginal increases in flux. This leads to a flattening of the curve, indicating that the generator's ability to produce additional voltage is limited despite increased field current. Essentially, the magnetic material can no longer effectively respond to changes in current due to its saturation.
What can resistance do?
U didn't clearify resistance in what aspect. If u mean electrical resistance,Resistance is phenomenum which describes the limitation of the flow of electric current in an electrical circuit. According to Ohms law (V=IR),the value of resistance is directly proportional to the value of voltage and inversely proportional to the value of current.That is,as the value of resustance increased,voltage also increases;also if the valur of resistance increases,the current reduces(as in I=V/R)
What is the difference between voltage gain obtained with bypass capacitor and without the bypass capacitor?
A: A TRANSISTOR gain is determined by current flow on the collector by adding a resistor to the emitter this current flow is reduced by adding or bypassing this resistor with a capacitor the net effect is that this emitter resistor will be reduced in value as frequency increases therefore change gain as a function of frequency input
How does one use the Perl chomp function?
The Perl Chomp function is a programming function that remove the "newline" character at the end of the string. One can use the Perl Chomp function to remove any character that has the same value as the current one.
If the resistance increases what will happen to voltage and current?
If you have a simple circuit. For eg: One voltage source and one resistor, then the voltage of the circuit will always remain the same, the current however will decrease following Ohms' Law V=I*R. If we have a current source instead of a voltage source, we are forcing the current to be a certain value so if we increase the resistor value the current will remain the same but the voltage will increase.
A function that decreases proportionally to it's current value. The smaller the function gets the faster it decreases.?
The logarithmic function is one such.
How does the maximum value of the current depend on the frequency of the AC voltage source?
The maximum value of the current in an AC circuit depends on the frequency of the voltage source. As the frequency increases, the maximum current value also increases.
What is a positive gradient in math?
A positive gradient is a characteristic of a function whose value increases as the value of the argument increases. So, if y is a function, f(x), of x, then an increase in the value of x is accompanied by an increase in the value of y.
Is the vi characterreistics curve of a pn diode is linear or exponential?
A diode has a fixed voltage drop (c), and if the voltage is less than that, no (or very little) current flows. Once the voltage increases above the voltage drop, the current increases exponentially as the voltage increases. A function that models this is: I = exp(b*(V-c)) where V is the voltage, I is the current, c is the voltage drop and b is a parameter that determines how fast the current increases; the value of b varies from one diode to another
Why doesn't the value of the fraction change when you simplify it?
Because it is proportionally the same value.
What happens to the value of y as x increases in the function y equals 2x-5?
7
The value of the determines whether the graph of an exponential function increases or decreases from left to right?
base
What is a positive or negative relationship on a graph?
If a function Y is dependent on X. if X increases in value then Y also increases then we call this a positive relationship. If X increases in value then Y decreases or vice versa then we call this a negative relationship.
Is a line with a positive slope a function?
Yes, a line with a positive slope is a function as long as it passes the vertical line test, meaning that for each value of x, there is only one corresponding value of y. A positive slope indicates that as x increases, y also increases, which maintains the definition of a function. Since a straight line has a consistent slope and does not repeat y-values for the same x-value, it qualifies as a function.
If the value of resistance increased then?
If the resistance is increased the current, which is inversely proportional, decreases and, the voltage drop increases.
What is ment by early effect in transistor?
For a fixed value of Vbe,as Vce increases the reverse bias on the collector base junction increases,hence the width of the depletion layer increases.therefore base width decreases,so collector current increases. To minimise this effect base must be heavily doped than collector CONSEQUENCES: ->due to early effect collector current increases with increasing Vce,for a fixed value of Vbe. ->the base current do not change significantly Early effect=collector current * correction factor
An exponential growth function describes an amount that decreases exponentially over time?
An exponential growth function actually describes a quantity that increases exponentially over time, with the rate of increase proportional to the current value of the quantity, resulting in rapid growth. The formula for an exponential growth function is y = a * (1 + r)^t, where 'a' is the initial quantity, 'r' is the growth rate, and 't' is time.
