MCQ
$\ce{A D.C}$. generator is based on the principle of :
- AElectrochemical induction.
- ✓Electromagnetic induction.
- CMagnetic effect of current.
- DHeating effect of current.
✓
Answer
Correct option: B.
Electromagnetic induction.
$\ce{A. D.C}.$ generator is based on the principle of electromagnetic induction.
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 world's known coal reserves are expected to last for about :
A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence refraction $(\angle\text{i}).$ He then measures the corresponding values of the angle of refraction $(\angle\text{r}) $ and the angle of emergence $(\angle\text{e})$ for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be.
→A student added acetic to test tubes $\ce{I, II, III}$ and $\ce{IV}$ containing the labelled substance and then brought a burning splinter near the mouth of each test tube.
The splinter would be extinguished when brought near the mouth of test tube:
→The splinter would be extinguished when brought near the mouth of test tube:
The salt which will give a neutral solution on dissolving in water will be:
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is :
The defect of vision which cannot be corrected by using spectacles is :
A student traces the path of a ray of light passing through a rectangular glass slab and marks the angle of incidence $i,$ angle of refraction $r$ and angle of emergence $e,$ as shown. The correctly marked angle $(s)$ is/are :
→Two wires of same metal have the same length but their cross-sectional area in the ratio $3 : 1$. They are joined in series. The resistance of the thicker wire is $10\Omega$. The total resistance of the combination will be.
→The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is :
Elements in a period have same :