What is the difference between led and lcd?

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WHAT IS THE PROPAGATION MEDIUM USED FOR E1 LINK?

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what do we mean by the term PTT in mobile? & what is the main function of PTT service?

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vswr?

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Name the modulation techniques.

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WHAT IS ARROW DISPLAY IN TRANSISTOR SYMBOL DIAGRAM? IN NPN AND PNP BOTH?//

3 Answers   Bhel,

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Explain the function of cyclo-converter?

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please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI}}} TECHNICAL question papers TO MY EMAIL ID megalasri@gmail.com I AM BE APPEARING STUDENT CAN I FILL THE FORM OF SECTION ENGG i have to face written test of rrb for the post of J.E (signal), so please send me the old/model question papers for this post to my e-mail ? electronics).for tecnical test question which book is preferred. Railway recruitment board (Changighar examination 2006 & 2005&2004 question papers. Wtion to Your Friend] RRB examination.so which book I have to refer?

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IN A PN JUNCTION DIODE,( ON FORWARD BIAS ) WHEN ELECTRONS AND HOLES PAIRS MADE AND CURRENT FLOWS,THEIR IS NO END OF ELECTRONS AND HOLES IN A LITTLE SEMICONDUCTOR DEVICE.

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Explain the difference between masking and non-masking?

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Explain the importance and effect of if in radio receiver?

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Define interfacing?

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