MCQ
The ripple factor in a half wave rectifier is
- ✓$1.21$
- B$0.48$
- C$0.6$
- DNone of these
✓
Answer
Correct option: A.
$1.21$
a
(a)Ripple factor $r = \sqrt {{{\left( {\frac{{{I_{rms}}}}{{{I_{dc}}}}} \right)}^2} - 1} = \sqrt {\frac{{{{\left( {{I_0}/2} \right)}^2}}}{{{{\left( {{I_0}/\pi } \right)}^2}}} - 1} $$=1.21.$
(a)Ripple factor $r = \sqrt {{{\left( {\frac{{{I_{rms}}}}{{{I_{dc}}}}} \right)}^2} - 1} = \sqrt {\frac{{{{\left( {{I_0}/2} \right)}^2}}}{{{{\left( {{I_0}/\pi } \right)}^2}}} - 1} $$=1.21.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An electric field $\overrightarrow{\text{E}}$ and a magnetic field $\overrightarrow{\text{B}}$ exist in a region. The fields are not perpendicular to each other.
→Two vertical parallel mirrors $A$ and $B$ are separated by $10\,cm$. A point object $O$ is placed at a distance of $2\,cm$ from mirror $A$. The distance of the second nearest image behind mirror A from the mirror $A$ is $.........\,cm$
→Two condensers of capacity $0.3\,\mu F$ and $0.6\,\mu F$ respectively are connected in series. The combination is connected across a potential of $6\,volts$. The ratio of energies stored by the condensers will be
→In an ink-jet printer, an ink droplet of mass $m$ is given a negative charge $q$ by a computer-controlled charging unit, and then enters at speed $v$ in the region between two deflecting parallel plates of length $L$ separated by distance $d$ (see figure below). All over this region exists a downward electric field which you can assume to be uniform. Neglecting the gravitational force on the droplet, the maximum charge that can be given so that it will not hit a plate is close to :
→A semiconductor $X$ is made by doping a germanium crystal with arsenic $(Z = 33)$. $A$ second semiconductor $Y$ is made by doping germanium with indium $(Z = 49)$. The two are joined end to end and connected to a battery as shown. Which of the following statements is correct
→Two identical thin rings, each of radius $R $ meter are coaxially placed at distance $R$ meter apart. If $Q_1$ and $Q_2$ coulomb are respectively the charges uniformly spread on the two rings, the work done in moving a charge $q$ from the centre of one ring to that of the other is
→Resistance of one carbon filament and one tungsten lamp are measured individually when the lamp are lit and compared with their respective resistances when cold. Which one of the following statements will be true
To establish an instantaneous displacement current of $2\,A$ in the space between two parallel plates of $1\,\mu F$ capacitor, the potential difference across the capacitor plates will have to be changed at the rate of
→The work function of sodium is $2.3 eV$. The threshold wavelength of sodium will be ........... $\mathop A\limits^o $
→Two infinitely long parallel wires having linear charge densities $\lambda_1$ and $\lambda_2$ respectively are placed at a distance of R metres. The force per unit length on either wire will be $\left(\mathrm{K}=\frac{1}{4 \pi \varepsilon_0}\right)$
→