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A 220V, 3hp, 1800rpm separately excited DC motor is controlled by a one-phase full-wave converter with an AC source of 230V at 60Hz. Assume that full load efficiency of the motor is 88% and enough field inductance is added to ensure continuous current for any torque greater than 25% of rated torque.Ra=1.5?.
1. Determine the firing angle α to obtain the rated torque at 1200rpm.
2. Compute the firing angle for the rated breaking torque at -1800rpm.
3. Find the firing angle corresponding to a torque of 35N·mand speed of 480rpm, assuming continuous conduction
Prepare the report keeping in view all the attributes of the SOs given on next page. There will be a subsequent presentation to check some Consider damped of the attributes that cannot be addressed in the report.
Explain the process of processor development
Design a circuit that will display the decimal numbers that are less than 60 by using two 7-segment displays. The number 60 should be displayed as 00. Use the least amount of IC's as possible.
initially at a temperature of 17c and a pressure of 100 kpa air occupies a volume of 3.0 m 3 in a rigid vessel.a valve opens allowing air at 600 kpa and 17c to enter until equilibrium is reached final temperature is found to be 77c
A 25 cm length of coaxial cable with inner radius of a=2 mm, and the outer radius of 4 mm, is filled with air. If the total charge on inner conductor is 50nano-Coulombs, what are the charge densities of the inner and outer conductors
Design a circuit which realizes this filter using Sallen-Key configuration. Find all the values of the circuit elements and determine the DC gain. For sake of easy availability of parts to build the circuit, chose the capacitors needed to be 0.01..
design a multirange ammeter with ranges of 1-10mA,0-100mA, and 0-1500mA, using a 5mA movement whose internal resistance is 3.8ohms. draw a circuit diagram of the meter.
1) For a forwarard converter, derive the minimum value of Vr - as a function of the input voltage Vg, the duty cycle D, and the turns ratio N1/N2 - that will cause the transformer magnetizing current to be reset to zero by the end of the switching..
What hazardous location designation applies to facilities where flammable gases are handled, processed or used, but under normal circumstances there is not a threat of explosion?
During the cyber security activity conducted in class by Renee Etoty, you were asked to identify systems that were conducting or experiencing cyber attacks. You will use the data provided during this activity to develop a program to display.
A direct current source is required to supply a controlled current of 20A to a load in which the resistance varies from 0 to 12 ?. The source consists of a 208 V(L-L) , 60 Hz , there -phases , a controlled bridge rectifier, and a large series indu..
A current i(t) = 10r(t) mA is applied to a 10 mF capacitor for t > 0, where r(t) is the ramp function. At t= 0, the capacitor voltage was zero. The voltage across the capacitor at t = 2 s is
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