Answer / bob

sine and cosine are interchangeable we all know that
sin(wt-90)=coswt
it means that if we shift sine wave phase of sine wave by
90 degree we will get cosine wave

Answer / r c ,rit

According to me both of them are some what same ,no need to
distinguish them. coasine is a sine wave with a phase
shift , so according to the reference change same wave is
getting different names. So i think no special use in
doing so...

Answer / raviteja nowduru

the basic difference between sine and cosine is just 90
degrees phase shift.the fourier transform of sine is cosine
and vice versa.it is easy produce sine wave compared to
other alternating quanitities.that is the reason y all
generators produce sine although they can produce other
altering quantities

Answer / naresh

alternating current can be both of sinusoidal and of cosine
form .
so any wave form can be applicable
cosine wave can be produced by shifting phase angle of the
sine wave by 90 degrees.

what are safety measures in /control in diesal engine/ explain them?

0 Answers  

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in DG synchronization system can i short R,Y,B- phase(DG-1) to R,Y,B Phase (DG-2), HOW IT WORK . WHAY WE NEED TO SYNCHRONIZATION.

1 Answers  

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why inverter rating is in KVA

3 Answers   Alstom, JSW,

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make control wire diagram of start and stop a function with a single push button

1 Answers   Sona,

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what is meant by impedance & transient protection?

0 Answers  

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Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?

0 Answers  

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plz explain TSM and PSM.with example suppose ct ratio is 4000/5 and tsm is .15 and plug is at 3.75 if fault current is 8000A.so how i find relay oprating time.

2 Answers   College School Exams Tests, ME,

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i have 2 motor of same rating. on no load condition one motor take 1.6A but other motor is taking 4.8A. what is the reason of this. please explain with proof.

8 Answers   Ambuja, UltraTech,

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Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method

0 Answers   UCC,

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We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

4 Answers  

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Please mention any books for electrical design load calculation for industrial,commercial(to select cable,breaker,bus bar,stator,)

1 Answers   C&S,

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Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

0 Answers  

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