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Electric Circuits
To get maximum current in a resistance of 3 Ω one can use n rows of m cells connected in parallel. If
the total no. of cells is 24 and the internal resistance of a cell is 0.5 then
(a) m= 12, n= 2 (b) m= 8, n= 4 (c) m= 2, n= 12 (d) m= 6, n= 4
the total no. of cells is 24 and the internal resistance of a cell is 0.5 then
(a) m= 12, n= 2 (b) m= 8, n= 4 (c) m= 2, n= 12 (d) m= 6, n= 4
Electric Circuits
With the circuit description from the reference to the chapter 13 (page 1179-1182) in [Adel S. Sedra, and Kenneth C. Smith, Microelectronic Circuits, Oxford University Press, 5th Ed. 2004],
1) Calculate the DC bias voltages at the collector, emitter, and base of the BC547.
2) Calculate suitable values of Cx to give open-loop gain A (beta) =1.2 at 1.15 MHz i.e. a 20% gain margin to ensure oscillation. Remember to take into account the effect of the capacitive loading of the CRO probe and CRO in your calculations (adds approx. 100 pF to the value of C2 in the circuit.).
1) Calculate the DC bias voltages at the collector, emitter, and base of the BC547.
2) Calculate suitable values of Cx to give open-loop gain A (beta) =1.2 at 1.15 MHz i.e. a 20% gain margin to ensure oscillation. Remember to take into account the effect of the capacitive loading of the CRO probe and CRO in your calculations (adds approx. 100 pF to the value of C2 in the circuit.).
Electric Circuits
An electric toaster-oven is rated 120 volts, 1500 watts. What is the resistance of the heater coil when it operates under these conditions, and what is the current through it?
A) 12.5 Ω, 9.6 A
B) 1190 Ω, 8.0 A
C) 8.0 Ω, 15.0 A
D) 18.7 Ω, 8.0 A
E) 9.6 Ω, 12.5 A
A) 12.5 Ω, 9.6 A
B) 1190 Ω, 8.0 A
C) 8.0 Ω, 15.0 A
D) 18.7 Ω, 8.0 A
E) 9.6 Ω, 12.5 A
Electric Circuits
A current of 4A flows through a wire of potential difference 20V calculate the quantity of the charge that flows through it one minute
Electric Circuits
Vsteady=[1/(C^2R^2ω^2)+1]sinωt + [CRω/(C^2R^2ω^2)+1]cosωt
In steady state, show that the amplitude of the output voltage?
explain if this circuit is a high-pass or low-pass filter?
In steady state, show that the amplitude of the output voltage?
explain if this circuit is a high-pass or low-pass filter?
Electric Circuits
Vsteady=[1/(C^2R^2ω^2)+1]sinωt + [CRω/(C^2R^2ω^2)+1]cosωt
Vtransitent=[CRω/(C^2R^2ω^2)+1]e^(-1/CR)t
Explain why they are called steady state and transient state voltages, respectively
Vtransitent=[CRω/(C^2R^2ω^2)+1]e^(-1/CR)t
Explain why they are called steady state and transient state voltages, respectively
Electric Circuits
if a human touch 1 lakh positive current standing on a stool,what will happen..
is the human dead or just nothing happen to him???
i'll be highly oblised if u get my ans..
thanks..
is the human dead or just nothing happen to him???
i'll be highly oblised if u get my ans..
thanks..
Electric Circuits
Compute the energy stored in a 60pF capacitor :
(a)when the charged to a potential different of 2kV
(b)when the charge on the plate is 30nC.
(a)when the charged to a potential different of 2kV
(b)when the charge on the plate is 30nC.
Electric Circuits
Compute the energy stored in a 60pF capacitor,
(a) when charged to a potential different of 2kV
(b) when the charge on the plate is 30nC.
(a) when charged to a potential different of 2kV
(b) when the charge on the plate is 30nC.
Electric Circuits
a current of 4A flows through a 12V car head light bulb for 10min.how much energy transfer takes place during this time?
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#331389 on Nov 2022
#331389 on Nov 2022