Electrical engineering MCQ Quiz Hub

Network Theory MCQs Set-7

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1. Consider a circuit having a charge of 600 C, which is delivered to 100 V source in a 1 minute. The value of Voltage source V is ___________




2. A resistor of 10 kΩ with the tolerance of 5% is connected in series with 5 kΩ resistors of 10% tolerance. What is the tolerance limit for a series network?




3. A 200 μA ammeter has an internal resistance of 200 Ω. The range is to be extended to 500μA. The shunt required is of resistance __________




4. A voltmeter has a sensitivity of 1000 Ω/V reads 200 V on its 300 V scale. When connected across an unknown resistor in series with a millimeter, it reads 10 mA. The error due to the loading effect of the voltmeter is




5. The value of one decibel is equal to?




6. A filter that passes frequencies between two designated cut-off frequencies and attenuates all other frequencies is called?




7. A filter that passes all frequencies lying outside a certain range, while it attenuates all frequencies between the two designated frequencies is called?




8. The relation between α, β, ϒ is?




9. The value of β in the attenuation band of constant k-low pass filter is?




10. The value of α in the pass band of constant k-low pass filter is?




11. Given a m-derived low pass filter has cut-off frequency 1 kHz, design impedance of 400Ω and the resonant frequency of 1100 Hz. Find the value of k.




12. Given a m-derived low pass filter has cut-off frequency 1 kHz, design impedance of 400Ω and the resonant frequency of 1100 Hz. Find the value of m.




13. The value of N in dB is?




14. An inverse network may be obtained by?




15. The value of N in terms of attenuation D is?




16. The input to output power ratio of the load (N) is the ratio of the________ to the __________




17. The N is defined as?




18. The propagation constant of a symmetrical T-section and π-section are the same.




19. The attenuation is not sharp in the stop band for an m-derived filter.




20. The bridged-T phase equalizer consists of?




21. In which of the filter circuits given below, will the bandwidth be equal to the critical frequency?




22. A Low-pass filter circuit has a cut-off frequency of 1.23 kHz. The bandwidth of the filter is ______________




23. For providing a Roll-off greater than 20dB/decade/pole, filters with which characteristics are useful?




24. In a parallel RL circuit, 10 A current enters into the resistor R and 15 A current enters into the Inductor L. The total current I is _____________




25. A thermistor is used for ____________




26. For a Band Pass Filter, the slope of the filter is given as 80dB/decade. The order of the Band Pass Filter is __________




27. For providing a Roll-off greater than 60dB/decade/pole, filters with which characteristics are useful?




28. A Low-pass filter circuit has a cut-off frequency of 50 kHz. The bandwidth of the filter is ______________




29. For a Band Pass Filter, the slope of the filter is given as 40dB/decade. The order of the Band Pass Filter is __________




30. The denominator polynomial in a transfer function may not have any missing terms between the highest and the lowest degree, unless?




31. The roots of the odd and even parts of a Hurwitz polynomial P (s) lie on ____________




32. If the polynomial P (s) is either even or odd, then the roots of P (s) lie on __________




33. If the ratio of the polynomial P (s) and its derivative gives a continued fraction expansion with ________ coefficients, then the polynomial P (s) is Hurwitz.




34. When s is real, the driving point impedance function is _________ function and the driving point admittance function is _________ function.




35. The poles and zeros of driving point impedance function and driving point admittance function lie on?




36. The real parts of the driving point function Z (s) and Y (s) are?




37. For the complex zeros to appear in conjugate pairs the poles of the network function are ____ and zeros of the network function are ____________




38. Based on the location of zeros and poles, a reactive one-port can have ____________ types of frequency response.




39. A driving point impedance with poles at ω = 0, ω = ∞ must have ___________ term in the denominator polynomial.




40. A driving point impedance with zeros at ω = 0, ω = ∞ must have ___________ term in the numerator polynomial.




41. A driving point impedance with zero at ω = 0 and pole at ω = ∞ must have ___________ term in the numerator polynomial.




42. A driving point impedance with pole at ω = 0 and zero at ω = ∞ must have ___________ term in the denominator polynomial.




43. A capacitor, used for power factor correction in a single phase circuit decreases which of the following?




44. For making a capacitor, the dielectric should have __________




45. The resistance of a thermistor decreases with increases in __________




46. Two capacitors of 0.5 μF and 1.5 μF capacitance are connected in parallel across a 110 V dc battery. The charges across the two capacitors after getting charged is ___________




47. When a lead acid battery is being charged, the specific gravity of the electrolyte will ___________




48. A series RLC circuit has a resonant frequency of 550 Hz. The maximum voltage across C is likely to occur at a frequency of ___________




49. The current wave shape is in the form of a square terminating at t = 4sec. The voltage across the element increases linearly till t = 4 sec and then becomes constant. The element is ____________




50. In a parallel RL circuit, 12 A current enters into the resistor R and 16 A current enters into the Inductor L. The total current I the sinusoidal source is ___________