MCQ
The value of form factor in case of half wave rectifier is
  • A
    $1.11$
  • $1.57$
  • C
    $1.27$
  • D
    $0.48$

Answer

Correct option: B.
$1.57$
b
(b)

Form factor $=\frac{\text { rms of out put voltage }}{\text { average value of out put voltage }}$

or form factor $=\frac{v_{\max } / 2}{v_{\max } / \pi}=\frac{\pi}{2}=1.57$

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

Two thin conducting shells of radii $R$ and $3R$ are shown in the figure. The outer shell carries a charge $+ Q$ and the inner shell is neutral. The inner shell is earthed with the help of a switch $S$.
A particular hydrogen like ion emits radiation of frequency $2.92 \times 10^{15}\, {Hz}$ when it makes transition from ${n}=3$ to ${n}=1 .$ The frequency in ${Hz}$ of radiation emitted in transition from ${n}=2$ to ${n}=1$ will be : (in $\,\times 10^{15}$)
A semi circular arc of radius $r$ and a straight wire along the diameter, both are carrying same current $i.$ Find out magnetic force per unit length on the small element $P$, which is at the centre of curvature.
Assertion : Mass of moving photon varies inversely as the wavelength.
Reason : Energy of the particle = Mass × $(\text{Speed of light})^2$
The ratio of gravitational force and electrostatic repulsive force between two electrons is approximately (gravitational constant $=6.7 \times 10^{-11} \,Nm ^2 / kg ^2$, mass of an electron $=9.1 \times 10^{-31} \,kg$, charge on an electron $=1.6 \times 10^{-19} C$ )
A dipole consisting of two charge $\pm q$ separated by a distance $2 a$ is placed with its centre $D$ away from the center of a grounded sphere of radius $R ( D > > a )$. When the dipole moment vector is perpendicular to the line joining the two centres (those of the dipole and sphere) the charge induced on the sphere is
Find the ratio of energy stored in $5\,\mu F$ and $4\,\mu F$ capacitor in the given circuit in steady state
The electric field between the two spheres of a charged spherical condenser
$A$ long straight wire is placed along the axis of a circular ring of radius $R$. The mutual inductance of this system is
A planet which is born sister of earth is