An alternating current generator has an internal resistance R_g a… - Vidyadip

MCQ

An alternating current generator has an internal resistance $R_g$ and an internal reactance $X_g$. It is used to supply power to a passive load consisting of a resistance $R _{ g }$ and 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
$X_g$
✓
$-X_g$
D
$R_g$.

✓

Answer

Correct option: C.

$-X_g$

For maximum power to be delivered from the generator $($or internal reactance $X_g )$ to the load $($of reactance, $X_{\text {}} ),$ $\Rightarrow X_L+X_g=0 ($the total reactance must vanish$)$
$\Rightarrow X_L=-X_g$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Alternating Current→Alternating Current — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

When current passes through the circuit a compass needle rests in which direction $($with respect to the Earth$)$?

The square root of the product of inductance and capacitance has dimensions of.

Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the ratio of heat produced in same time for parallel to series will be:

For a uniformly charged thin spherical shell, the electric potential $(V)$ radially away from the center $(O)$ of shell can be graphically represented as

The figure showing the correct relationship between the stopping potential $V_0$ and the frequency $v$ of light for potassium and tungsten is

Which of the following transition will have highest emission wavelength

The diagram shows a capacitor $C$ and a resistor $R$ connected in series to an $ac$ source. ${V_1}$ and ${V_2}$ are voltmeters and $A$ is an ammeterConsider now the following statements

$I$.Readings in $A$ and $V_2$ are always in phase

$II$.Reading in $V_1$ is ahead in phase with reading in $V_2$

$III$.Readings in $A$ and $V_1$ are always in phase which of these statements are/is correct

Assertion : We cannot think of a magnetic field configuration with three poles

Reason : A bar magnet does exert a torque on itself due to its own field.

For the given circuit of $PN-$ junction diode, which of the following statement is correct

When light rays from the sun fall on a convex lens along a direction parallel to its axis