Bissoy.com
Doctors Medicines MCQs Q&A

An input of Vsinωt is applied to an ideal frequency doubler. Compute its output voltage? × . b) Vo = × . c) Vo = × . d) Vo = × .

An input of Vsinωt is applied to an ideal frequency doubler. Compute its output voltage? × . b) Vo = × . c) Vo = × . d) Vo = × . Correct Answer (Vx×Vy) /Vref2

In an ideal frequency doubler, same frequency is applied to both inputs. ∴ Vx = Vxsinωt and Vy = Vysinωt => Vo = (Vx×Vy × sin2ωt) / Vref = × .

Related Questions

If the input power for a frequency doubler is 10.7 mW and the output measured after the frequency doubling process is 21 mW, then the conversion gain for the frequency doubler is:
A system provides output yi(t) when xi(t) is applied. If the system is said to be LTI then which of the following properties must satisfy? (i).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) + by2(t) (ii).If the input is x(t – T), then the output must be y (t – T) (iii).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) * by2(t) (iv).If the input is x(t – T), then the output must be y(t + T)
Which of the following statements are correct for an ideal constant voltage source? 1. Its output voltage remains absolutely constant whatever the change in load current. 2. It possesses zero internal resistance so that internal voltage drop in the source is zero. 3. Output voltage is provided by the source would remain constant irrespective of the amount of current drawn from it. 4. Output voltage provided by the source varies with the amount of current drawn from it.
A sinusoidal input voltage Vin of frequency ω is fed to the circuit shown in the figure, where C1 ≫ C2. If Vm is the peak value of the input voltage, then output voltage (Vout) is
Electronics mcq question image
Consider the following statements regarding reciprocity theorem : 1. In any passive linear bilateral network, if the single voltage source Vx, in branch x produces the current response Iy, in branch y, then the removal of the voltage source from branch x and its insertion in branch y will produce the current response iy in branch x. 2. The interchange of an ideal voltage source and an ideal ammeter in any passive, linear, bilateral circuit will not change the ammeter reading. 3. The interchange of an ideal current source and an ideal voltmeter in any passive linear bilateral circuit will change the voltmeter reading. Which of the above statements are correct ?
Consider the following statements. 1. SMPS generates both electromagnetic and radio frequency interference due to high switching frequency. 2. SMPS has a high ripple in output voltage and its regulation is poor. 3. The output voltage of SMPS is less sensitive with respect to input voltage variation. Which of the above statements are correct?
In the question one statement is given, followed by two conclusions, I and II. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statement. Statement: A function is a relation between a set of input elements and a set of possible output elements where each input is related to exactly one output. Conclusion I: Every input element is related to every output element. Conclusion II: Every input element is related to one element of the output.
A step-up chopper has input voltage of 220 V and output voltage of 660 V. If the conducting time of the IGBT based chopper is 100 μs, compute Toff width of the output voltage pulse.
Assertion: The process of testing the frequency response of amplifier and filter can be done by sweep frequency generator that automatically varies its frequency over a pre-determined range. Reason: The sweep frequency generator should have a ramp generator which applies a linear ramp voltage the input of a voltage tuned oscillator (VTO).
Consider the following statements: Any element is redundant if connected in a) series with an ideal current source b) parallel with an ideal current source c) series with an ideal voltage source d) parallel with an ideal voltage source Which of the above statements are correct?