We all know about DC concept,i.e +ve connected to +ve ,-ve connected to -ve. If landline phones lines are dc lines,then how it works even if the polarties are interchanged??

1 Answers   Infosys,

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Draw the block diagram of a 128 line EPABX and explain its operation?

0 Answers  

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What is the difference between d-latch and d flip-flop?

0 Answers  

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what is beamwidth in case of antenna system

1 Answers  

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Explain the operation of 1φ ac voltage controller with rl load?

0 Answers  

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How will you connect a waveguide to a coax?

0 Answers   BEL,

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what is a voltage transfer curve of an op-amp?

0 Answers  

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In binary to gray converter, …………… gate is used. A AND B OR C NAND D EX-OR

3 Answers   Micromax,

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wt is the function of transformer?

6 Answers  

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Define why are active filters preferred

0 Answers  

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what is the difference between the voltage of 5 volts capacitor and and 5 volts battery?

13 Answers   Prithvi, SRM, TCS,

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what is the relation between power and frequncy

3 Answers  

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