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A motor operated from a 480 V(rms), 60 Hz source has an output of 800 hp. The motor is 89% efficient and has a power factor of 69.5% lagging. What is the electrical input power in watts of the motor?
write an 8051 program that would generate a 200khz, 50% duty cycle, square wave at P1.0.Use Timer 0 for the delay. Ignore the overheads cycles due to the instructions in the loop. Assume 12 MHz clock. All data must be hex.
the worker's safety harness D-ring is attached to a 12-foot shock absorbing lanyard that is securely fastened to the structure at a point 40 feet above ground level. Does this arrangement violate OSHA standards for fall protection? Explain.
What is the primary purpose of a resistor in series with a LED being driven by a flip-flop?
Design a decade counter (negative edge-triggered counter) using flip flop circuit that can be used to perform binary counting. Show the timing diagram for the input and four outputs of the decade counter.
Operation of NPN Bipolar Transistor : a. Describe the operation of a typical NPN bipolar junction transistor used both as an amplifier and a switch. b. List the 4 regions of operation and draw I-V characteristic curve.
The purpose of this project is to design a device that would remotely control (from a Bluetooth-enabled mobile phone for instance) at least two actuators (e.g. relays and switches).
Consider a permanent-magnet dc-motor with the following parameters: Ra=0.35Ohms, La=1.5mH, Ke=0.5V/(rad/s), Kt=0.5Nm/A, and Jm=0.02kgm^2. The rated torque is 4Nm. This motor is supplies by a switch-mode dc-dc converter
Explain Capacitance of parallel plates capacitor, Relative permitivity is 500, The area is one square meter, The distance between the plates is 0.001 meters
In a Zigbee network, Coordinators and Routers can't "sleep", i.e. enter a low-power, inactive mode. Why is this What implications are there because of this on the structure and applications of a Zigbee network
1. The closed-loop transfer function of a system is T(s) = 11.1(s +18)/ ((s + 20)(s2 + 4s +10)) Plot the poles and zeros of this system and discuss the dominance of the complex poles. What overshoot for a step input do you expect
Design a circuit with minimum number of gates for a binary multiplier that multiplies two unsigned four-bit numbers, Using Inverters, AND, OR gates and Full Adders.
Reduce the equation to the slope-intercept form and give the slope and the y-intercept.
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