English

An a.c. generator changes the ______energy to ______ energy. - Physics

Advertisements
Advertisements

Question

An a.c. generator changes the ______energy to ______ energy. 

Fill in the Blanks
Advertisements

Solution

An a.c. generator changes the mechanical energy to electrical energy.

shaalaa.com
  Is there an error in this question or solution?
Chapter 10: Electro-Magnetism - EXERCISE-10 (C) [Page 259]

APPEARS IN

Selina Physics [English] Class 10 ICSE
Chapter 10 Electro-Magnetism
EXERCISE-10 (C) | Q 19. | Page 259

RELATED QUESTIONS

Which sources produce alternating current?


What change should be made in an a.c. generator so that it may become a d.c. generator?


 Explain the principle of an electric generator. 


Each one of the following changes will increase emf (or voltage) in a simple generator except: 

(a) increasing the number of turns in the armature coil
(b) winding the coil on a soft iron armature
(c) increasing the size of the gap in which the armature turns
(d) increasing the speed of rotation


A d.c. generator is based on the principle of:

(a) electrochemical induction
(b) electromagnetic induction
(c) magnetic effect of current
(d) heating effect of current 


The frequency of alternating current (a.c.) supply in India is:

(a) 0 Hz
(b) 50 Hz
(c) 60 Hz
(d) 100 Hz


Draw a neat labeled diagram of an A.C. generator 


A flat coil of wire rotates at a constant speed about an axis perpendicular to a uniform magnetic field. Draw a graph to show how the induced e.m.f. varies relative to the positions of the coil during its one complete rotation. At what position of the coil, the e.m.f. has the maximum value?


The given figures 1 to 3 show the working of a simple A.C. generator. Study the diagrams and answers of the following questions.

(i) State and explain the principle underlying the working of a simple generator.
(ii) Where is the loop of wire placed?
(iii) What happens when the loop is rotated?
(iv) Indicate the direction of the current flow through the wire for the first half of the turn (in first figure). Name and state the rule used in finding the direction of the current.
(v) Indicate the direction of the current for the case shown in second figure. 
(vi) Indicate the direction of current in the outer circuit (i.e., electric bulb) in first and third figure.
(vii) What type of current is shown in the above diagrams? Explain.


Observe the following diagram and answer the questions.

  1. Explain the construction of the equipment shown in the figure.
  2. How is AC generated?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×