Electronics - Voltage and Current - Discussion

Discussion Forum : Voltage and Current - General Questions (Q.No. 45)
45.
A secondary cell generates dc via chemical activity; a primary cell generates dc:
electrically
thermally
optically
chemically
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
18 comments Page 1 of 2.

Sneha said:   8 years ago
Thank You @Arfiya khan.

Aniket said:   9 years ago
@Kamleshwar.

Transformer is converted user need voltage in the form step down and step up high or low.

Gopala krishna said:   10 years ago
Transformer is transfer the electrical energy from one circuit to another circuit with out any changing frequency.

Joyti saxena said:   10 years ago
Yes transformer is to step up and step down voltage.

Manish said:   1 decade ago
@Kameshwar.

Transformer is used to step up and step down the voltage. We need a rectifier for the conversion purpose of ac to dc.

Asha said:   1 decade ago
Whats wrong with you @Kameshwar is transformer is converts AC to DC?

Transformer is step up and step down the voltage that's all. Just think and type the answer.

Shiva said:   1 decade ago
Hello sir transformer is a basic, it will changes the level of voltage.

Arfiya khan said:   1 decade ago
Transformer is a device which is used to step up and step down the voltage.

Rectifiers are used to convert AC to DC where.

Thyristors are used to convert dc to ac where in big industries.

IGBT are used to convert DC to AC here we can use frequency up to 1000 HZ.

Vijender said:   1 decade ago
Actually transformer is a device which is used to step up and step down the voltage bcs we need only 220 volt for home issues or appliances. So to convert high voltage to low voltage we simply use transformer.

Visveswaran said:   1 decade ago
I won't agree with @Kameshwar answer.

Actually transformer is device which converts AC to AC.

Conversion of AC to DC by using rectifier.
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