1.Syeda and Urmi are two friends who are doing a class in the course of Electrical Drives and Instrumentation. One day when they studied together in a virtual environment about the instrumentation amplifier, then Urmi said to Syeda that Noise is the main enemy of this amplifier. So, we have to solve this problem. How can they solve the problems of noise in this amplifier? Syeda said that if they use high CMRR then this problem can be minimized. Are you agree with Syeda? Give necessary information. 2.Suppose you are working on a dc motor in your laboratory. At the start of the motor, you are using a starter circuit, and when the motor is geared up with the full speed, then the starter is removed from the circuit. After a while, you observe that the field circuit of a motor is open-circuited. What may happen under this condition? How can you solve this problem?
Power Amplifier
The power amplifier is an electronic amplifier designed to maximize the signal strength of a given input. The input signal strength is enhanced to a high enough level to drive output devices such as speakers, headphones, RF (Radio frequency) transmitters, etc. Unlike voltage / current amplifiers, the power amplifier is designed to drive core loads directly and is used as a storage block in the amplifier series.
Maximum Efficiency Criterion
In every field of engineering, there is a tremendous use of the machine and all those machines are equipped for their popular work efficiency so it very much important for operation engineers to monitor the efficiency of the machine, planning engineers to check out the efficiency of the machine before installing the machine and design engineers to design machine for higher efficiency than and then the utility will procure their products that will ultimately lead to profit and loss of the company. It indicates the importance of efficiency right from the initial stage as manufacturing units, intermediate stage as planning coordinators, and end-users stage as a utility.
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