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Q. Basic working of optical coupler?
The optical coupler is suitable for frequencies in the low megahertz range. The photodiode type shown above can handle only small currents; however, other types of couplers, combining phototransistors with the SCR, can be used where more output is required. Optical couplers are replacing transformers in low-voltage and low-current applications. Sensitive digital circuits can use the coupler to control large current and voltages with low-voltage logic levels
history of engineering economices
Q. The two-wattmeter method for measuring three-phase power is applied on a balanced wye-connected load, and the readings are given by W C = 836W and W A = 224 W If the system
Q. For given asymptotic Bode plots. (a) Find ¯H 1 , ¯H 2 , and ¯H 3 at ω = 5 rad/s. (b) At what angular frequency ω is the magnitude of ¯H 4 (jω) one-half of the magnitude o
What is Key bouncing? Mechanical switches are used as keys in lots of the keyboards. When a key is pressed the contact bounce back and forth and settle down only after a littl
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Decision Making The rhombus diamond symbol is used to represent the decision making process as shown below. Figure De
I need help to build a circuit diagram for home energy management.It includes load controllers,a central system in which we should programme all of the control commands,and a two w
Objective of Long-Term Plans for Technical Loss Reduction The primary objectives of strengthening and improvement of sub-transmission and distribution system in the long-term
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