4 electrical & electronics students

How does a wireless mouse work when even it is not connected to any other devices? A mouse is a very important peripheral device in a computer which is used to move the cursor on the computer screen. It has several other buttons which are used to highlight a part of text, images or other information, to scroll pages, to click and open files, folders etc. In case of a wired mouse, the information from the mouse to the CPU and back are transmitted through a pair of wires. In case of a wireless mouse, these information are exchanged through radio signals. To support this arrangement, there is a radio transmitter in the mouse and a corresponding receiver in the computer. The radio frequency receiver receives the radio frequency signals, decodes them, and then sends these signals directly to the computer as normal. RF receivers usually come as built in components that connect to the mouse input. In some cases a separate card is installed in the computers. Most wirel...

PAPER – I T i me Allowed: 3 Hours Maximum Marks: 200 Candidates should attempt SIX questions, selecting TWO question from Section - A, ONE from Section - B, ONE from Section - C and TWO from Section – D. Assume suitable data, if necessary and indicate the same clearly . SECTION A 1. (a) In Fig. 1, the switch was in position 2 for a long time. It is switched to position 1 at t = 0. At t = 5 sec it is switched back to position 2 and left there. Obtain an expression for i(i), the capacitor current for t > 0. 10 (b) A circuit is made up of a 10  resistance, a 1 F capacitance and a I h-inductance all connected in series A voltage of 100 V at varying frequencies is applied to the circuit. Find the frequency (or frequencies) at which the circuit would consume only 10% of the power it consumed at resonance. 10 (c) A 2-poe network made up of passive linear resistors is fed at port 1 by an ideal voltage source of V volts. It is loaded at port 2 by a resistan...

                                 Cloud Computing Cloud computing  is a technology that uses the internet and central remote servers to maintain data and applications. Cloud computing allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access. This technology allows for much more efficient computing by centralizing storage, memory, processing and bandwidth. A simple example of cloud computing is Yahoo email, Gmail, or Hotmail etc. You dont need a software or a server to use them. All a consumer would need is just an internet connection and you can start sending emails. The server and email management software is all on the cloud ( internet) and is totally managed by the cloud service provider Yahoo , Google etc. The consumer gets to use the software alone and enjoy the benefits. The a...