what is the name of the device that is made by combining two basic types of solid state rectifiers allowing the device to both rectify and amplify a current?

966

What is the ray of light?

1031

The light in vehicle become dim when it is starting,why?

2199

Explain what affect does electricity have on soil?

991

Explain one advantage of a scanning electron microscope over a transmission electron microscope?

920

Distinguish between emission and absorption line spectra. : quantum physics

930

What is the homogenous?

1023

An ice-box is built of wood 1.75 cm thick, lined with cork 3 cm thick. If in the steady state the temperature of the inner surface of the cork is 0 ºC and that of the outer surface of wood is 12 ºC, what is the temperature of the wood-cork interface? The thermal conductivities of wood and cork are 0.2 W/m-K and 0.04 W/m-K respectively

2679

What seven colors appear to be white when mixed together?

934

How is specific gravity defined?

982

Dear sir, I appeared for the interview for the post of SCIENTIST/ENGINEER 'SC'in ISRO on 02/12/2009. when the resluts will be announced??

2529

what are the Newtons principles? what is mean by gravitational force? what is mean by space technology? what is the use in space technology?

2234

What cycle most directly describes the working cycle of a heat engine operating as an ideal engine of maximum thermal efficiency?

988

In which medium the velocity of sound is large?

935

What is radium used for?

995