Recent content by liam1992

The density will decrease, surely this makes it easier to compress and therefore more efficient but there is less actual oxygen being compressed meaning less power produced by the engine. Is this correct?

Hi for a bit of work I have to explain the advantages and disadvantages of a higher engine intake air temperature. I have been told that it decreases the power output of the engine but I can't seem to work out why it would decrease. I also want to comment on how it affects the efficiency but...

Calculate the density at which the available thrust of a jet propelled aeroplane is equal to the minimum drag for the full fuel load case. Use the simplest assumption for the variation of engine thrust with density. Wing area, S = 29.5 Weight, W = 88000 CD,0 = 0.02 k = 0.044 Max thrust...

I was wondering how a bandstop filter works when it is connected in parallel as in the picture. I know that the low pass filter eliminates higher frequencies and the high pass filter eliminates the lower frequencies. I understand how they form a bandpass filter when connected in series...

I don't know, what I wrote was the exact wording of the question.

The answer is 53.6Hz but by doing it this way I get an answer of 48.23Hz so I don't know where I have gone wrong

The question says discuss the differences in the response. It's alright now, the lecturer sent us an answer sheet and the answer was there is no differences, they are identical. I hate it when they do that.

That's what I thought but the cut off frequency is proportional to 1/RC and the RC value for both circuits is the same. It could be transient response but I don't know much about it because we haven't been taught anything about it

Can you show me how you got that answer please.

You have two high-pass filters with different R and C values discuss the difference in the response. Filter a) R=5kΩ C=250μf Filter b) R=25kΩ C=50μf I calculated that they have the same cut-off frequency but without actually testing the circuit on Multisim and connecting a bode plotter...

Vibrations of a motor (40Hz) cause noise on the signal of a strain gauge that monitors load on a cantilever that measures periodic load changes at the rate of 1/minute. Design a filter that reduces the signal caused by the vibrations by 90%. I thought about a low pass filter that has a cut...

For a high pass filter with a 1kΩ resistor and a 330nf capacitor at what frequency will the frequency be attenuated by -20dB? I thought about using the equation gain=20log(Xc/Z) but I am not sure if this is correct, I saw it on a website and even if it is I can't seem to calculate the frequency.

I thought you needed the length of the wire and radius to work out the magnetic field strength and things

I don't know, that statement is all that I was given so I don't know if I am supposed to make assumptions or not.

Surely I don't have enough information to apply either of these laws though