Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

problem 1: Determine the total R.M.S. voltage across a hundred ohm resistor placed as a load on a diode. With Tc = 1000 oC and go = .01mho, operating in the space-charge limited region. The bandwidth is as 5 KHz.

problem 2: The emission current of a temperature limited diode is 10 ma. Find out the R.M.S. value of the fluctuations component of the current in 20 KHz bandwidth.

problem 3: This is convenient to interpret the noise in a triode as being due to noisy resistor in series with the grid of a noise free value. Compute the value of this noisy resistor for a triode with mutual conductance of 2.6mA/V.

problem 4: A mixer phase consists of noise figure of 20db and this is preceded by an amplifier which has a noise figure of 9 db and an available power gain of 15db. Compute the overall noise figure referred to input.

problem 5: The equivalent noise temperature of cooled parametric amplifier is 20 degree Kelvin. Determine the noise figure.

problem 6: A radio receiver, joined to an antenna whose resistance is 50 ohm has an equal resistance of 50 ohm. Compute the receiver’s noise figure in db and its equal noise temperature at a supposed temperature.

problem 7: The noise figure of an amplifier at room temperature is .2db. Determine the equal temperature.

problem 8: The first period of a two phase amplifier has a voltage gain of 10, a 600 ohm input resistor, a 1600 ohm equivalent noise resistance and 27 ohm output resistance. For second phase these values are 25 ohm, 81 kohm, 10 kohm and 1 Mohm correspondingly.

Compute the equivalent noise resistance of this phase amplifier.

problem 9: The input resistor of the first phase of two phase amplifier is 600 ohm. The equivalent input noise resistance of these two phase amplifier was found to be 2.518 k ohm. Compute the noise figure of the amplifier if it is drawn by generator whose output resistance is 50 ohm.

problem 10: An amplifier operating over the frequency range from 1 to 20 MHz consists of a 10 kohm input resistance. Determine the RMS noise voltage at the input to this amplifier if the ambient temperature is 27oC?

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M97555

Have any Question? 


Related Questions in Electrical & Electronics

A square-wave vsi drive supplies 460 v line-line at a

A square-wave VSI drive supplies 460 V line-line at a frequency of 60 Hz to an induction motor that develops a rated torque of 50 N-m at 1750 rpm. The motor and the inverter efficiencies can be assumed to be constant at ...

A a flux of 02 x 10-4nbspwb will establish sufficient

a. A flux of 0.2 x 10 -4  Wb will establish sufficient attractive force for the armature of the relay of given figure to close the contacts. Determine the required current to establish this flux level if we assume that t ...

A 1 mh inductor and a 1 komega resistor are connected to a

A 1 mH inductor and a 1 kΩ resistor are connected to a 12 V battery for a long time. The circuit is similar to that in Fig. 1.26. The battery is suddenly removed and a 1 kΩ resistor is substituted. (a) Find the initial i ...

For the network of given figurea find the rms values of the

For the network of given figure: a. Find the rms values of the voltages v R  and v C  at a frequency of 1 kHz. b. Plot v C  versus frequency for the frequency range zero to 10 kHz. c. Plot the phase angle between e and i ...

Calculate the gap energy and the emitting wavelength of a

Calculate the gap energy and the emitting wavelength of a GaAs laser that is operated at 100°C. Take the necessary data from the tables in Appendix 4 and Section 19.2.

What electric device uses coloured bands to indicate its

What electric device uses coloured bands to indicate its size? would it be resistor colour code? What is a common electrical device that is used to slow down the flow rate of electricity?

Question 1 for fig 1 the input voltage is dc and positive

Question 1. For Fig 1, the input voltage is dc and positive with the polarity shown. Specify how to implement the switches using a minimal number of diodes and transistors, such that the converter operates over the entir ...

The psd of a narrowband gaussian noise processnt is as

The PSD of a narrowband Gaussian noise process,N(t) , is as shown in the accompanying figure. (a) Find and sketch the PSD of the I and Q components of the narrowband noise process. (b) Find and sketch the cross-spectral ...

A 100 kw 240 v shunt generator has a field resistance of 55

A 100 kw, 240 V shunt generator has a field resistance of 55 Ohm and armature resistance of 0.067 Ohm. Find the full load generated voltage.

A measurement of the closed-loop gain of an amplifier shows

A measurement of the closed-loop gain of an amplifier shows it to be -25 VN at 120 kHz and -100 VN at S kHz. Estimate the closed-loop gain at low frequencies and the corresponding 3 dB frequency. What is f, for the op am ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate