Advertisements
Advertisements
प्रश्न
State one advantage of using a.c. over d.c.
उत्तर
The voltage of a.c. can be stepped up by the use of step-up transformer at the power generating station before transmitting it over long distances. It reduces the loss of electrical energy as heat in the transmission line wires. On the other hand, if d.c. is generated at the power generating station, its voltage cannot be increased for transmission, and so due to passage of high current in the transmission line wires, there will be a huge loss of electrical energy as heat in the line wires.
APPEARS IN
संबंधित प्रश्न
The essential difference between an AC generator and a DC generator is that
What is the major difference between the simple alternator and most practical alternators?
State two ways in the which the current alternating current and direct current?
An electric generator converts:
(a) electrical energy into mechanical energy.
(b) mechanical energy into heat energy.
(c) electrical energy into chemical energy.
(d) mechanical energy into electrical energy.
The frequency of alternating current (a.c.) supply in India is:
(a) 0 Hz
(b) 50 Hz
(c) 60 Hz
(d) 100 Hz
State whether the following statement are true of false:
A wire with a green insulation is usually the live wire.
Name and state the principle of a simple a.c. generator. What is its use?
What determines the frequency of a.c. produced in a generator?
Explain the difference:
AC generator and DC generator.
Draw a neat diagram of an AC generator and explain its working.
