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In the Triac and Diac triggering circuit shown above, the variable resistor, RI, varies from 1.5 ko to 35 ka and its series capacitor value is 700 nF.
The supply voltage's rms value is 500 V and has a frequency of 100 Hz. The Diac has a breakover voltage of 40 V. What are the minimum and maximum firing delays (angles)?
A 1φ, 440 V, 80 kW load, having a lagging power factor of0.8 is supplied through a feeder of impedence 0.6 + j1.6 Ω anda 1φ, 100 kVA, 220/440 V, 60 Hz transformer. The equivalent impedance of the transformer referred to the high-voltage side is 1...
Determine the shunt resistance needed to convert a galvanometer to an ammeter with a full scale reading of 10A if the scale requires 2.5mAto cause full deflection with a coil resistance of 10Ω.
design a Melay sequential circuit which investigates an input sequence x and which will produce an output of z=1 whether thetotal number of 0's in the sequence is odd,provided that thesequence 01 has occured at least once.
A PV system using battery charger can provide the necessary power when there is no sun. The manufacturer has provided following parameters (All measurements are done at standard condition of AM1.5 G spectrum) of an Indi dual solar cell.
A continuous line of charge lies along the x-axis, extending from x= +xo to positive infinity. The line carries positive charge with a uniform linear charge density lambda not. What are (a) the magnitude
A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%
Determine a suitable sampling frequency. Design a notch filter to remove the 50Hz component, paying particular attention to any assumptions you have made in the design.
A 16-bit analog to digital converter is used in a system which is found to have a maximum signal-to-noise ratio of 84dB. What is the effective number of bits
A circular loop of radius a is located in the y-z plane center at the origin in the presence of a uniform B field pointed in the +x direction. At t=0 the loop is rotated counter clockwise with radial frequency about the z-axis.
A 1.0 dc voltage source is connected across a 10 ohm resistor. What is the current through the resistor if (a) the voltage source is ideal (b) the voltage source has internal resistance 0.1 ohm (c) internal resistance 1.0 ohm
Bit 4 of Port B is connected to a switch that normally outputs a zero. Monitor this switch to detect a change from zero to one. Immediately when it becomes one, call a function to toggle Bit 5 of Port B, which is connected to an LED
We are imaging a field for NASA from a satellite. The field has vertical (sinusoidal) stripes that repeat at a rate of 1 stripe per meter. Our satellite has a CCD sensor (camera) that is 1 cm x 1 cm. This sensor has 1000x1000 pixels.
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