why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

Indcoil Transformers, Power Grid,

draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups 

why velocities of x rays and gamma rays are same inspite they have different wavelengths and frequencies

Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions? 

Process Control Technologies,

Draw diagrams for the waveforms you would expect when the bit sequence 10111001 is transmitted on IEEE 802.3 

During the early months of 2009, some economists concluded that the slew of U.S. government programs created during the fall of 2008 to stabilize an economy marked by an absence of credit, a wave of enormous asset write downs, a precipitous decline in housing prices, and a historic loss of consumer confidence _________________ has not succeeded in engendering healthy intra-bank credit flows and reviving depressed equity prices has not succeeded in engendering healthy intra-bank credit flows and bringing about the revival of have not succeeded in engendering healthy intra-bank credit flows and reviving depressed equity prices have not succeeded in engendering healthy intra-bank credit flows and to revive depressed equity prices

A signal has a wavelength of 1 micro min in air.how far can the front of the wave travel during 1000periods?

In a selection of suitable heating equipment for drying of crystals of biochemical, the one of the lowest current consumption will be chosen for safety consideration. Selection is available : (A) 120 V microwave oven 1800 W. (B) 240 V conventional oven 11000 W. Which one should be chosen and why?

When electric field is parallel to the plane of incidence, the electromagnetic wave is said to be a.Linearly polarized b.circularly polarized c. Elliptically polarized d. Hyperbolically polarized

The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input

How can i solve the problem of ROSEMOUNT 5300 guided wave level transmitter of full range? For more clearfication , another guided wave level transmitter VEGA brand have the same problem and i solved it by drain the champer from water and make "false signal suppretion" from transmitter push buttons it's configuration to tell the transmitter to avoid any built-up signal ,,, so my question how can i avoid the problem that rosemount read full range while the champer empty or any other ????

Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

VECL,

why we using different type of microwave antenna we using like one is connected to MMU and one more is connected to other slot what is use of both antenna?

TalentPro,

Caffeine standard is recommended by the monograph for HPLC wavelength accuracy calibration. It is covered range of 205 to 273 only.If the method have wavelength beyond the range, then how it supports for instrument performance?

what type of waves exactly the radiations are ?

Infosys,