MCQ
In the half wave rectifier circuit operating from $50\, Hz$ mains frequency, the fundamental frequency in the ripple would be......$ Hz$
  • A
    $25$
  • $50$
  • C
    $70.7$
  • D
    $100$

Answer

Correct option: B.
$50$
b
In half wave rectifier, negative half of an a.c. cycle is removed from the sinusoidal pulse, but the time lag between two positive pulses is same, hence frequency remains same as the input (mains) frequency i.e., $50\, Hz$

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

In a Young 's double slit experiment  sources of equal intensities are used  Distance hetween slits is $d$ and Wavelength of light used is $\lambda \left( {\lambda  <  < d} \right)$ . Angul ar separation of the nearest points on either side of central maximum where intensities becomes half of the maximum value
A circular coil having $N$ $turns$ is made from a wire of length $L$ $meter$. If a current $I$ $ampere$ is passed through it and is placed in a magnetic field of $B$ $Tesla$, the maximum torque on it is
A uniform chain (mass $M,$ length $L$) is released from rest from a smooth horizontal surface as shown in the figure. Velocity of the chain at the instant it completely comes out of the table will be
A block of mass $M$ is kept on a platform which starts accelerating upwards from rest with a constant acceleration $a$ . During the time interval $T$ the work done by contact force on mass $M$ is
In order to pass $10\,\%$ of main current through a moving coil galvanometer of $99\, ohm$, the resistance of the required shunt is ............ $\Omega $
The ratio of the magnetic field at the cpentre of a current carrying circular wire and the magnetic field at the centre of a square coil made from the same length of wire will be
The ratio of specific charge of an $\alpha $ -particle to that of a proton is
Moment of inertia of a uniform annular disc of internal radius $r$ and external radius  $R$ and mass $M$ about an axis through it centre and perpendicular to its plane is 
If $r$ denotes the distance between the sun and the earth, then the angular momentum of the earth around the sun is proportional to
Light coming from a star is observed to have a wavelength of $3737 Å$, while its real wavelength is $3700 Å$. The speed of the star relative to the earth is [Speed of light $3 \times {10^8}m/s$]