Measurement and control systems, Electrical Engineering

Electronic signals are used by almost all measurement and control systems to transfer information. Much of this data is in the form of analogue voltages, which are prone to the effects of noise and interference.

Interference is picked up from external sources present in the local environment. These sources are usually beyond the control of the systems engineer and so their effects must be moderated by careful earthing and shielding. Noise is generated within the circuits, and components themselves, and by good design may be reduced but not eliminated.

Answer the following questions.

1 Convert the following gains to dB.

a) power 3, 17, 854

b) voltage 5, 28, 36500

2 Convert the following gains to arithmetic ones

a. power 3 dB , 45 dB , 126 dB

b. voltage 2 dB , 35 dB , 126 dB

3 Express the following powers in dBm:

15 mW, 165mW, 10 µW

Posted Date: 2/18/2013 7:18:58 AM | Location : United States







Related Discussions:- Measurement and control systems, Assignment Help, Ask Question on Measurement and control systems, Get Answer, Expert's Help, Measurement and control systems Discussions

Write discussion on Measurement and control systems
Your posts are moderated
Related Questions
Q. A rigid 50- coaxial transmission line has air as dielectric. If the radius of the outer conductor is 1 cm, find the cutoff frequency

Give the alternate functions for the port pins of port3? RD - Read data control output. WR - Write data control output. T1 - Timer / Counter1 external input or test pin.


Commercial Losses in Electrical Systems Commercial losses are caused by pilferage, theft, defective meters, and errors in meter reading and in estimating un-metered supply of

Analysis of Semiconductor Devices There are two complementary techniques of studying semiconductor devices: Via numerical simulation of the semiconductor equation

What is Threaded system. Threaded system: At times we require implementing an operating system which can process multiple threads. Many threads are handled through the kernel

speed control of single phase ac motors

Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.

An 12µF capacitor is connected in series to a 0.5M? resistor across the dc voltage supply of 240V. verify: (a)  Time constant (b)  Initial charging current (c)  Time fo

A DC shunt motor rotating at 1560 RPM is supplied from a 240-V source. The line current supplied to the motor is equal to 27 A. The shunt field resistance of the motor is equal to