Question
A device which converts electrical energy into mechanical energy is
✓
Answer
(c) Electrical motor is used to convert electrical energy into mechanical energy.
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
The area of cross section of the rope used to lift a load by a crane is $2.5 \times 10^{-4} m ^{2}$. The maximum lifting capacity of the crane is $10$ metric tons. To increase the lifting capacity of the crane to $25$ metric tons, the required area of cross section of the rope should be.$.........\times 10^{-4} \,m ^{2}$ (take $g =10\, ms ^{-2}$ )
→For the circuit shown, which of the following statements is true
A simple pendulum is released from $A$ as shown in figure. If $m$ and $l$ represent the mass of the bob and the length of the pendulum respectively, the gain in kinetic energy at $B$ is
→A potential difference of $10 \,V$ is applied across a conductor of $1000 \,\Omega$. The number of electrons flowing through the conductor in $300 \,s$ is ..........
→Consider a concave mirror and a convex lens (refractive index $=1.5$ ) of focal length $10 \ cm$ each, separated by a distance of $50 \ cm$ in air (refractive index $=1$ ) as shown in the figure. An object is placed at a distance of $15 \ cm$ from the mirror. Its erect image formed by this combination has magnification $M _1$. When the set- up is kept in a medium of refractive index $7 / 6$, the magnification becomes $M _2$. The magnitude $\left|\frac{ M _2}{ M _1}\right|$ is
→When two isolated conductors $A$ and $B$ are connected by a conducting wire positive charge will flow from :-
→A piece of fuse wire melts when a current of $15\, ampere$ flows through it. With this current, if it dissipates $22.5\, W$, the resistance of fuse wire will be .............. $\Omega$
→Three amplifiers each having voltage gain $10$ , are connected in series. The resultant gain would be
→A bottle of sodawater is grasped by the neck and swing briskly in a vertical circle. Near which portion of the bottle do the bubbles collect
A liquid enter at point $A_{1}$ with speed $3.5 m / s$ and leaves at point $A _{2} .$ Then find out the height attained by the liquid above point $A _{2}$ (in $cm$)
→