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In the previous two years, a lot of innovation has come in the mobile computing world. Apple has launched very imaginative mobile phone, iphone and ipad along with app store. Google launched Android in Nov 2007. Blackberry released SDK and app world. Microsoft has come up with phone 7 framework. Almost each type of mobile can be programmed using J2ME. Making applications for all these devices is Mobile application development.
Q. Explain phase-shift keying? In PSK, the phase angle of a carrier is keyed between two values. When the values are separated by π radians, it is known as phase-reversal keyin
Q. (a) Let a unit impulse of voltage v(t) = δ(t) be applied to a series combination of R = 20 and L = 10 mH. Determine the current i(t)in the series circuit. (b) Repeat (a) for
State the postulates of Bohr''s atomic model. Write any three merits and demerits.
Q. Frequency response of amplifiers? All amplifiers exhibit variations of performance as the signal frequency is changed. The frequency response of an amplifier may be defined
Q. (a) An ampli?er with F 0 = 3 or 4.77 dB, f 0 = 4 GHz, and BN = 14 MHz is used with an antenna forwhich T a =200K. The connecting path loss is 1.45, or 1.61 dB at a physical t
Earth Leakage : Earth leakage takes place when, through some fault in an appliance or its connections. Electric current escapes to earth i.e. the body of the appliance become 'liv
Using Nyquist theorem, determine the sampling rate for an analog signal with frequencies from 3000Hz to 86000Hz and for a signal with ahorizontal line in th
emf equation
I need some help for doing the assignment
Give three reasons why a chamfer shouldn''t an "unimportant" dimension
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