why is there -48 v DC voltage use in CISCO Router.?? is there any advatage to use this type of negative voltage rather than positive voltage??

1 Answers  

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why do we do the experiments regarding motors(swinburns, magnetization of dc shunt motor....) with constant speed

1 Answers  

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what is selective flooding?

2 Answers   Syntel, TCS,

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fullform for ISA

15 Answers  

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Describe the operation of series inverter with aid of diagrams. Describe an expression for output frequency, current and voltages. What are the disadvantages of basic series inverter?

0 Answers  

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What is the duty cycle in on-off control method?

0 Answers  

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what r ur strengths?

10 Answers   HCL, Wipro,

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A FREQUENCY CATCHER AND SIGNAL BREAKER AND UNKNOWN FREQUENCY SENDING DEVICE MADE BY ME.DO YOU CALL IT AMAZING INVENTION THAT BLOW DRONE IN 1 SECOND?

0 Answers  

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sir please provide me the previous technical papers for hpcl writtien exam

0 Answers  

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if we are measuring dc voltage of battery then why would we get ac voltage component in it?

1 Answers  

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WHEN A SIGNAL x(t) GIVEN TO DIFFERENTIATOR Gives y(n); when y(t) is multiplied by sinusoidal signal gives a positive sided sinusoidal signal, what is the laplace transform of x(t)& y(t)? y(n) ?

1 Answers  

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waht is gain of antenna

3 Answers   Bosch,

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