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Circumferential aluminium fins of rectangular profile (1.5cmwide and 1mm thick) are fitted on to a 90 mm engine cylinder with a pitch of 10 mm. The height of the cylinder is 120 mm. The cylinder base temperature before and after fitting the fins are 200°C and 150°C respectively. Take ambient at 30°C and h(average) =100 W/m2K. Estimate the heat dissipated from the finned and the unfinned surface areas of cylinder body.Circumferential aluminium fins of rectangular profile (1.5cmwide and 1mm thick) are fitted on to a 90 mm engine cylinder with a pitch of 10 mm. The height of the cylinder is 120 mm. The cylinder base temperature before and after fitting the fins are 200°C and 150°C respectively. Take ambient at 30°C and h(average) =100 W/m2K. Estimate the heat dissipated from the finned and the unfinned surface areas of cylinder body.
The sinusoidal flux in the core of a transformer is given by φ = 0.002 Sin 377t Wb. This flux links a primary winding of 100 turns. Determine the induced voltage in the coil as a function of time.
Write a C program to toggle PB3 of PORTB ON and OFF, with a 0.5-ms delay after each toggle. Assume that clock frequency is 6.25 MHz. Write inline assembly-language code inside of the delay function.
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is dropped to 1000 RPM if the field current remains unchanged
Assume that there is a resistance of 2.70 k in a system and there is a current of 2.2 Amps flowing thru it. How much energy is consumed by this component in 24 hours
A capacitor ofvalue 100[uF] is connected and charged through a voltage source of20V in series with a resistor of 10 ohms at t= 0s. What is thepower dissipated in the resistor at the beginning (t=0) and the power dissipated in the resistor after a ..
(a)Determine the capacitance of an isolated conducting sphere of radius a in free space (Consider an outer conductor existing at r -> infinity). (b) The sphere is to be covered with a dielectric layer of thickness d and have a dielectric constant o..
John's father has made his plans to use the car to visit friends if it rains or if the temperature is above 800F. Under what condition will John go to the movies?
The simplest way of using an FPGA is by displaying different LED's. This project has six basic and interesting steps, which will show us how FPGA is becoming the next generation of the programming industry.
A six-cylinder, four-stroke, 4.5-L compression-ignition engine operates on the ideal diesel cycle with a compression ratio of 17. The air is at 95 kPa and 55°C at the beginning of the compression process and the engine speed is 2000 rpm.
Design a circuit that sounds an alarm if motion is detected in more than one room at a time. Show all design steps (truth table or equation(s),minimization using K-map(s), and logic diagram(s).
A modulo 8 counter cycles through the states Q0Q1Q2Q3 = 1000,1100, 0100, 0110, 0010, 0011, 0001, 1001. The counter has eightoutputs: Z0 = 1 when the counter is in state 1000 and the CLK is 0and Z0 = 0 otherwise
In a pseudo NMOS inverter design the maximum Vol = 0.1 V. If VDD = 2.5 V, IVtI = 0.4 V, unCox = 4 upCox = 100 uA/V^2 , (W/L)n = 0.375 um/0.25 um, find: 1. The value of (W/L)p 2. Is it a maximum or a minimum value for the design.
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