MCQ
Function of rectifier is
  •  To convert ac into dc
  • B
     To convert dc into ac
  • C
    Both (a) and (b)
  • D
    None of these

Answer

Correct option: A.
 To convert ac into dc
To convert ac into dc

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

An electric field $\overrightarrow{\mathrm{E}}=(2 \mathrm{xi}) \mathrm{NC}^{-1}$ exists in space. $\mathrm{A}$ cube of side $2 \mathrm{~m}$ is placed in the space as per figure given below. The electric flux through the cube is .................. $\mathrm{Nm}^2 / \mathrm{C}$
A TV tower has a height of 100 m. The average population density around the tower is $1000\  per\  km^2$. The radius of the earth is $6.4 \times 10^6 $ m. the population covered by the tower is
A nucleus of mass $218\, amu$ in free state decays to emit an  $\alpha$- particle. Kinetic energy of the $\alpha$- particle emitted is $6.7\, MeV$. The recoil energy (in $MeV$) of the daughter nucleus is
Which sample contains greater number of nuclei : a $5.00- \mu Ci$ sample of $_{240}Pu$ (half-life $6560\,y$) or a $4.45 - \mu Ci$ sample of $_{243}Am$ (half-life $7370\, y$)
A heavy nucleus $N$, at rest, undergoes fission $N \rightarrow P+Q$, where $P$ and $Q$ are two lighter nuclei. Let $\delta=M_N-M_P-M_Q$, where $M_P, M_Q$ and $M_N$ are the masses of $P, Q$ and $N$, respectively. $E_P$ and $E_Q$ are the kinetic energies of $P$ and $Q$, respectively. The speed of $P$ and $Q$ are $v_P$ and $v_Q$, respectively. If $c$ is the speed of light, which of the following statement(s) is(are) correct ?

$(A)$ $E_P+E_Q=c^2 \delta$

$(B)$ $E_P=\left(\frac{M_P}{M_P+M_Q}\right) c^2 \delta$

$(C)$ $\frac{v_P}{v_Q}=\frac{M_Q}{M_P}$

$(D)$ The magnitude of momentum for $P$ as well as $Q$ is $c \sqrt{2 \mu \delta}$, where $\mu=\frac{M_P M_Q}{\left(M_P+M_Q\right)}$

The least distance of distinct vision for a long-sighted person is $x\,m$ . He wants to read a newspaper placed at a distance $(x/2)\,m$ . The power of the spectacle lens used by him is $x\,D$ . What is the value of $x$ ?
A radio isotope has a half life of 75 years. The fraction of the atoms of this material that would decay in 150 years will be
A coil having $N$ $turns$ is wound tightly in the form of a spiral with inner and outer radii $a$ and $b$ respectively. When a current $I$ passes through the coil, the magnetic field at the centre is
A particle of mass $m$ and charge $q$ enters a region of magnetic field (as shown) with speed $v$. There is a region in which the magnetic field is absent, as shown. The particle after entering the region collides elas tically with a rigid wall. Time after which the velocity of particle becomes anti parallel to its initial velocity is
Different combination of $3$ resistors of equal resistance $R$ are shown in the figures.
The increasing order for power dissipation is: