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a. The mass of an electric car is 900 kg including the passengers. A single motor mounted on the front wheels drives the car, and the radius of the wheel is 0.3 m. The car is going downhill at a speed of 50 km/hr, and the slope of the hill is 30 degrees. The friction coefficient of the road surface at a given weather condition is 0.8. Ignore the motor losses and compute the power generated by the electric machine.
b. Assume that the electric car above is moving at a constant speed. It takes the car 1 minute to reach the bottom of the hill. Calculate the energy generated by the electric machine.
By direct integration find the Laplace transforms and the region of convergence of the following functions
The voltage output from a two active gage of Wheatstone bridge was 3.5 mV. The excitation voltage was 5 V. Nominal resistance of the strain gage was 350 ohms and the gage factor was 2.05. Calculate the force in pounds on the steel rod.
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).
A transformer is used to match an 8 ohm speaker to a 500ohm audio line. What is the turns ratio of the transformer what is the input voltage and output voltage when 15W is being delivered to the speaker
Design of sync counter 0010 to 1101 using JK flip flops, Design a synchronous counter using J-K flip-flops that will count from 0010 to 1101 repetitively.
1) Modern technology has produced a small 1.5-volt alkaline battery with a nominal stored energy of 150 joules. For how many days will it power a calulator that draws a 2-mA current 2)The current entering the positive terminal of an element is
Calculate the %age second harmonic distortion present in the amplifier's output for a sinusoidal input of 10 mV r.m.s.
"Divide by 3 clock with 50% duty cycle" is the most commonly asked ASIC design question. This solution gives a simple design in which only 1 counter is required which works only on positive edge of the clock.
Consider the transformer to deliver its rated kilovoltamperes at 0.80 power factor lagging to a load on the low-voltage side with 240 V across the load. Find the highside terminal voltage.
calculate the mmf when the machine operates at rated voltage at full load? PLease explain how to get the solution to this problem?
The maximum ratings for all resistors of this type are 250 (V) and ½ (W). What range of resistance values are limited by the maximum voltage rating of 250 (V), and what range of resistance values are limited by the maximum power of ½ (W)
Three resistors R1, R2 and R3 are connected in series and a supply voltage of 240 V. If R2 = 2R1, R3 = 3R1 and the total power taken by the circuit is 480 watts. Calculate the power in each resistor.
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