MCQ
The maximum efficiency of full wave rectifier is.........$\%$
  • A
    $100$
  • B
    $25.20$
  • C
    $40.2$
  • $81.2$

Answer

Correct option: D.
$81.2$
d
(d)For full wave rectifier $\eta = \frac{{81.2}}{{1 + \frac{{{r_f}}}{{{R_L}}}}}$
==> ${n_{\max }} = 81.2\% $ $(rf << RL)$

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

Similar questions

The negative of the work done by the conservative internal forces on a system equals the change in:
In the adjoining circuit, the battery ${E_1}$ has an $e.m.f.$ of $12\,volt$ and zero internal resistance while the battery $E$ has an $e.m.f.$ of $2\,volt$. If the galvanometer $G$ reads zero, then the value of the resistance $X$ in $ohm$ is
A silver sphere of radius $1\ cm$ and work function $4.7 \ eV$ is suspended from an insulating thread in free-space. It is under continuous illumination of $200 \ nm$ wavelength light. As photoelectrons are emitted, the sphere gets charged and acquires a potential. The maximum number of photoelectrons emitted from the sphere is $A \times 10^2$ (where $1 < A < 10$ ). The value of  $'Z '$ is
A non uniformly shaped conductor is charged then at it's sharpest point
A proton and a neutron combine to give a deuterium nucleus.If mo​ and mp​ be the mass of neutron and proton respectively, then mass of deuterium nucleus is:
Identify the type of conductors whose $V-I$ relationship is linear.
The idea of secondary wavelets for the propagation of a wave was first given by
An electrical circuit consists of ten $100 \,\Omega$ resistors. Out of these $10$ resistors, a group of $n _1$ resistors are connected in parallel and another group of $n _2$ resistors are separately connected in parallel. These two groups are then connected in series and this combination is connected to a voltage source of $100 \,V$. If the net current though the circuit is $2.5 \,A$. The values of $n _1$ and $n _2$ are
For a metallic wire, the ratio V/i (V = the applied potential difference, i = current flowing) is
Two like magnetic poles of strength $ 10$  and $40$ $ SI$ units are separated by a distance $30 \,cm$. The intensity of magnetic field is zero on the line joining them