What is the frequency response of a circuit?

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asked Mar 10, 2018 by anonymous

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What is the best frequency response?

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What do you mean by frequency response of an amplifier?

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asked Sep 5, 2018 by anonymous

State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.

Last answer: The need of multistage amplifier The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in ... to use a MULTISTAGE AMPLIFIER . Frequency response of R-C coupled amplifier.

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asked May 8, 2018 by anonymous

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is

Last answer: A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is 500 Hz

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asked May 8, 2018 by anonymous

In a series R-C circuit, with the increase in frequency, current

In a series R-C circuit, with the increase in frequency, current (A) Reduces (B) Increases (C) Does not change (D) Becomes zero

Last answer: In a series R-C circuit, with the increase in frequency, current Increases

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asked Apr 29, 2018 by anonymous

In a series RLC high Q circuit, the current peaks at a frequency

In a series RLC high Q circuit, the current peaks at a frequency (1) equal to the resonant frequency (2) greater than the resonant frequency (3) less than the resonant frequency (4) equal to half the resonant frequency

Last answer: In a series RLC high Q circuit, the current peaks at a frequency equal to the resonant frequency

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asked Mar 25, 2018 by anonymous

In a series L-C circuit at the resonant frequency the?

Last answer: In a series L-C circuit at the resonant frequency the current is maximum.

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asked Mar 25, 2018 by anonymous

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

Last answer: In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L or C.

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asked Jun 18, 2018 by anonymous

What is the time response of a system whose poles lie on the right hand side of s-plane?

What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response

Last answer: What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response

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asked Mar 11, 2018 by anonymous

What is the impulse response of the system?

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asked Apr 26, 2018 by anonymous

The damping factor of a particular system is unity, the system response will be

Last answer: The damping factor of a particular system is unity, the system response will be critically damped

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asked Mar 10, 2018 by anonymous

What is meant by 3db frequency?

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asked Apr 28, 2018 by anonymous

A second order system shows 100% overshoot in its unit step response. It can be categorized as

A second order system shows 100% overshoot in its unit step response. It can be categorized as (A) underdamped system. (B) overdamped system. (C) Critically damped system. (D) undamped system.

Last answer: A second order system shows 100% overshoot in its unit step response. It can be categorized as undamped system.

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asked Mar 10, 2018 by anonymous

Why the cutoff frequency is taken for 3db?

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What is a clipping circuit?

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What is a diode clamper circuit?

Last answer: Tha faction of diode

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asked Mar 22, 2018 by anonymous

What is the use of diode in the circuit?

Last answer: Diode is a device which allows the flow of current in one direction and blocks the current in opposite direction.

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asked Jun 18, 2018 by anonymous

A pulse radar has a pulse repetition frequency (PRF) of 3 KHz. If the radar is emitting at 10 GHz, what is the

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asked May 8, 2018 by anonymous

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: (A) Eddy Current and Hysteresis losses will be excessive (B) Current will be too much high (C) Transformer may start to smoke and burn (D) No effect

Last answer: What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: (A) Eddy Current and Hysteresis losses will be ... will be too much high (C) Transformer may start to smoke and burn (D) No effect

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asked Jun 18, 2018 by anonymous

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

Last answer: The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

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asked Jun 18, 2018 by anonymous

What is the frequency range of VHF electromagnetic waves?

What is the frequency range of VHF electromagnetic waves? A) 30-300 kHz B) 30-3000 kHz C) 30-300 MHz D) 30-3000 MHz

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asked Apr 29, 2018 by anonymous

What is the frequency of an alternator which has 2 poles and makes 3600 revolutions per minute?

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asked Apr 29, 2018 by anonymous

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased?

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

Last answer: What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

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asked Sep 20, 2017 by anonymous

What is the unit of frequency?

Last answer: Unit of frequency is herzt

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asked Mar 25, 2018 by anonymous

In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will?

Last answer: In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will be reduced by half.

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asked Mar 25, 2018 by anonymous

In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will?

Last answer: In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will be doubled.

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asked May 1, 2018 by anonymous

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque (1) Decreases (2) Increases (3) Remains constant (4) None of the above

Last answer: The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases

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asked Apr 26, 2018 by anonymous

A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz

A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly

Last answer: A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly 4 Ghz

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asked Mar 24, 2018 by anonymous

A sine wave has a frequency of 50 Hz. Its angular frequency is _______ radian/second.

Last answer: A sine wave has a frequency of 50 Hz. Its angular frequency is 100 n radian/second.

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316 views 1 answer

asked Apr 26, 2018 by anonymous

In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the

In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the (A) applied load (B) internal compensation (C) impedance of the source (D) power dissipation in the chip

Last answer: In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the internal compensation

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98 views 1 answer

asked Mar 21, 2018 by anonymous

A Weston frequency meter is?

Last answer: A Weston frequency meter is moving iron instrument.

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53 views 1 answer

asked Mar 24, 2018 by anonymous

For a frequency of 200 Hz, the time period will be?

Last answer: For a frequency of 200 Hz, the time period will be 0.005 s.

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asked Mar 21, 2018 by anonymous

In a Weston frequency meter, the magnetic axes of the two fixed coils are?

Last answer: In a Weston frequency meter, the magnetic axes of the two fixed coils are perpendicular.

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asked Mar 21, 2018 by anonymous

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of?

Last answer: In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of 0.5 Hz.

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176 views 1 answer

asked Jun 18, 2018 by anonymous

A pulse compression radar transmits an encoded pulse having a frequency chirp from 990 MHz to 1010 MHz

A pulse compression radar transmits an encoded pulse having a frequency chirp from 990 MHz to 1010 MHz centred around 1 GHz. The range resolution capability of this radar is A) 7.5 m B) 7.5 Km C) 75 m D) 750 m

Last answer: A pulse compression radar transmits an encoded pulse having a frequency chirp from 990 MHz to 1010 MHz centred around 1 GHz. The range resolution capability of this radar is 7.5 m

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asked Apr 29, 2018 by anonymous

In a self-controlled synchronous motor fed from a variable frequency inverter

In a self-controlled synchronous motor fed from a variable frequency inverter (1) the rotor poles invariably have damper windings (2) there are stability problems (3) the speed of the rotor decides stator frequency (4) the frequency of the stator decides the rotor speed

Last answer: In a self-controlled synchronous motor fed from a variable frequency inverter the frequency of the stator decides the rotor speed

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383 views 1 answer

asked Apr 29, 2018 by anonymous

For a 500 Hz frequency excitation, a 50 km long power line will be modeled as

Last answer: For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line

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2.6k views 1 answer

asked Apr 28, 2018 by anonymous

The time period of third harmonic of power supply frequency, in milliseconds, is

The time period of third harmonic of power supply frequency, in milliseconds, is (A) 20 (B) 3.33 (C) 6.66 (D) 60

Last answer: The time period of third harmonic of power supply frequency, in milliseconds, is 6.66

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482 views 1 answer

asked Apr 26, 2018 by anonymous

Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase

Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be

Last answer: Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be 90o

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179 views 1 answer

asked Mar 25, 2018 by anonymous

The frequency of an alternating current is?

Last answer: The frequency of an alternating current is the number of waves passing through a point in one second.

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76 views 1 answer

asked Mar 24, 2018 by anonymous

Two waves of the same frequency have opposite phase when the phase angle between them is?

Last answer: Two waves of the same frequency have opposite phase when the phase angle between them is 180°.

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186 views 1 answer

asked Mar 18, 2018 by anonymous

Is the speed of alternator is directly proportional to frequency?

Last answer: Yes, speed of alternator is directly proportional to frequency.

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78 views 1 answer

asked Feb 3, 2018 by anonymous

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Last answer: Power MOSFET have high turning on and turning off capability high switching speed of MOSFET is due to the high rate of change of drain voltage. The switching losses of power MOSFET ... lower frequency. Hence, operating frequency of power MOSFET is higher than that of power BJT.

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700 views 1 answer

asked Apr 30, 2018 by anonymous

For measurement of radio frequency ac signals __________ type meter is used

Last answer: For measurement of radio frequency ac signals thermo-couple type meter is used

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asked Apr 28, 2018 by anonymous

The device which allows reverse power flow and withstands highest switch frequency is

The device which allows reverse power flow and withstands highest switch frequency is (A) GTO (B) MOSFET (C) IGBT (D) Inverter grade SCR

Last answer: The device which allows reverse power flow and withstands highest switch frequency is MOSFET

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asked Mar 19, 2018 by anonymous

If the supply frequency to the transformer is increased, the iron loss will?

Last answer: If the supply frequency to the transformer is increased, the iron loss will increase.

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asked Mar 15, 2018 by anonymous

Which capacitor is used for high frequency?

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What is the frequency response of a circuit?

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