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1. Saturated ammonia vapor at -25°C is compressed isentropically to 7.62 bar. Determine the temperature after compression
2. Define each of the following efficiencies for a compressor and explain under what conditions they should be used:
(a) isentropic efficiency,
(b) isothermal efficiency, and
(c) exergy efficiency.
BJT Amplifiers Sketch an emitter-follower circuit with R1 = R2 = 50kohm ; RE = 2kohm. The collector of the npn transistor is connected to VCC = 5V and the input signal has an internal resistance, RS = 0.5kohm
When a square wave with a fundamental frequency of 2khz and amplitude 5v and comprised of up to five odd harmonic (each successive odd harmonic having half the amplitude of its predecessor) is passed though a standard telephone line of bandwidth o..
a) Draw the State Transition diagram. b) Derive the State Table for implementing the counter using D flip-flops. c) Use K-maps to minimize the inputs to the D flip-flops. d) Show the final circuit.
A rectangular core has fixed permeability μr >> 1, a square cross section of dimension a x a, and has centerline dimensions around its perimeter of b and d. Coils 1 and 2, having turn numbers N1 and N2, are wound on the core.
With the switch closed, find the real power P, reactive power Q, and apparent power S supplied by the generator. What is the power factor of the generator?
1. Calculate the frequency for each of the following periods:
A first-order allpass filter impulse response is given by h(t) = - d(t) + 2e^(-t)*u(t) a) find the zero-state response of this filter for the input e^(t)*u(-t). b) sketch the input and the corresponding zero-state response.
A transmission line with impedance 0.1+ J0.2Ω isused to deliver power to an industrial load. The load voltage ismaintained at VL = 240
A 10 ohm resistor and 10 henry inductor are attached in series to a 10 volt DC supply. If the current i(0)=2.5 amperes, what is the current after 1 second
The heat transfer coefficient is Along its lower half surface heat is exchanged by radiation with a surroundings at Using a simplified radiation model formulate the steady state fin heat equation for this fin.
Ib is 15uA in a circuit where an NPN transistor has an Av of 75 and VCE is 10 when Vcc is 25 and Beda DC is 75 and the Ic is 1.125mA, What would Rc be, assuming Ve=0
A series circuit has a resistance of 1 ohm and an inductance of 1 ohm. The voltage across the circuit has an amplitude of 15 volts and a phase shift of 30 degrees. What is the current of the circuit in frequency and time domain
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