Home
Class 12
PHYSICS
An alternating current generator has an ...

An alternating current generator has an internal resistance `R_g` and an internal reactance `X_g`. It is used to supply power to a reactance `X_L`. For maximum power to be delivered from the generator to the load, the value of `X_L` is equal to:

A

zero

B

`X_g`

C

`-X_g`

D

`R_g`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

The frequency of an ac supply is doubled, what happens to inductive reactance X_L and capacitive reactance X_c ?

An electric motor runs on a dc source of emf E and internal resistance r. Show that the power output of the source, is maximum when the current drawn by the motor is (E)/(2r) .

A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Omega . What maximum current can be drawn from the cell? Could the cell drive the starting motor of a car?

A metal bar AB can slide on two parallel thick metallic rails separated by a distance l. A resistance R and an inductance L are connected to the rails as shown in the figure. A long straight wire carrying a constant current I_(0) is placed in the plane of the rails and perpendicular to them as shown. The bar AB is held at rest at a distance x_(0) from the long wire. At t=0, it is made to slide on the rails away from wire. Answer the following questions. Find a relation among i, (di)/(dt) and (d phi)/(dt) , where i is the current in the circuit and phi is the flux of the megnetic field due to the long wire through the circuit.

Three students X,Y and Z performed an experiment for studying the variation of alternating currents with angular frequency in a series LCR-circuit and obtained the graphs shown in the figure They all used a.c sources of the same r.m.s. value and inductances of the same value. What can we conclude about the capacitance value. What can we conclude about nature of the impedance of the set up at frequency omega_0 ?

Let f(x)=x+ sin x . Suppose g denotes the inverse function of f. The value of g'(pi/4+1/sqrt2) has the value equal to

Let f(x)=x+ sin x . Suppose g denotes the inverse function of f. The value of g'(pi/4+1/sqrt2) has the value equal to

Three students X,Y and Z performed an experiment for studying the variation of alternating currents with angular frequency in a series LCR-circuit and obtained the graphs shown in the figure They all used a.c sources of the same r.m.s. value and inductances of the same value. What can we conclude about the resistance values used by them