MCQ
To convert mechanical energy into electrical energy, one can use:
- ADC dynamo.
- BAC dynamo.
- CMotor.
- DTransformer.
✓
Answer
- DC dynamo.
- AC dynamo.
Explanation:
DC dynamo or AC dynamo use to convert mechnical energy into electrial 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
S.I. unit of magnetic moment is :
A large virtual image of object is formed by :
While using an electric bulb, the reflection for street lighting should be from
|
(a) Concave mirror |
(b) Convex mirror |
(d) Parabolic mirror |
(d) Parabolic mirror |
The potential energy of a system of two charges is negative when:
A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be
|
(a) 10 cm |
(b) 15 cm |
(c) 20 cm |
(d) 30 cm |
Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by
|
(a) 33.3 cm |
(b) 66.67cm |
(c) 25 cm |
(d) 50 cm |
An EM wave of intensity I falls on a surface kept in vacuum and exerts radiation pressure p on it. Which of the following are true?
When does a magnetic dipole possess maximum potential energy inside a magnetic field?
Metallic solids are always opaque because
|
(a) Solids effect the incident light |
|
(b) Incident light is readily absorbed by the free electron in a metal |
|
(c) Incident light is scattered by solid molecules |
|
(d) Energy band traps the incident light |