Define Bandpass filter.

Define Bandpass filter.
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Answer :

The bandpass filter is the combination of high and low pass filters, and this allows a specified range of frequencies to pass through.
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Related questions

The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Description : The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Last Answer : B. bandpass filter

The purpose of stacking elements on an antenna. A. Sharper directional pattern B. increased gain C. Improved bandpass D. All of these

Description : The purpose of stacking elements on an antenna. A. Sharper directional pattern B. increased gain C. Improved bandpass D. All of these

Last Answer : D. All of these

Define High pass filter.

Description : Define High pass filter.

Last Answer : A low pass filter allows only high frequency signals upto a certain break point fH to pass through

Define low pass filter.

Description : Define low pass filter.

Last Answer : A low pass filter allows only low frequency signals upto a certain break point fH to pass through.

For a ______ channel, we need to use the Shannon capacity tofind the maximum bit rate. A) noisy B) noiseless C) bandpass D) low-pass

Description : For a ______ channel, we need to use the Shannon capacity tofind the maximum bit rate. A) noisy B) noiseless C) bandpass D) low-pass

Last Answer : noisy

For a ______ channel, the Nyquist bit rate formula defines thetheoretical maximum bit rate. A) noisy B) noiseless C) bandpass D) low-pass

Description : For a ______ channel, the Nyquist bit rate formula defines thetheoretical maximum bit rate. A) noisy B) noiseless C) bandpass D) low-pass

Last Answer : noiseless

If the available channel is a ____channel, wecannot send a digital signaldirectly to thechannel. A) low-pass B) bandpass C) low rate D) high rate

Description : If the available channel is a ____channel, wecannot send a digital signaldirectly to thechannel. A) low-pass B) bandpass C) low rate D) high rate

Last Answer : bandpass

Baseband transmission of adigital signal is possible only if wehave a ____channel. A) low-pass B) bandpass C) low rate D) high rate

Description : Baseband transmission of adigital signal is possible only if wehave a ____channel. A) low-pass B) bandpass C) low rate D) high rate

Last Answer : ow-pass

What method provides the widest bandpass?

Description : What method provides the widest bandpass?

Last Answer : A swamping resistor in parallel with the tuned circuit.

Harmonic suppressor connected to an antenna. A. Low-pass filter B. High-pass filter C. M-derived filter D. Constant-K

Description : Harmonic suppressor connected to an antenna. A. Low-pass filter B. High-pass filter C. M-derived filter D. Constant-K

Last Answer : A. Low-pass filter

What is the proper procedure for suppressing electrical noise in a mobile station? A. Apply shielding and filtering where necessary B. Insulate a all plain sheet metal surfaces from each other C. Apply anti-static spray liberally to all nonmetallic D. Install filter capacitors in series with all dc wiring

Description : What is the proper procedure for suppressing electrical noise in a mobile station? A. Apply shielding and filtering where necessary B. Insulate a all plain sheet metal surfaces from each other C. ... -static spray liberally to all nonmetallic D. Install filter capacitors in series with all dc wiring

Last Answer : A. Apply shielding and filtering where necessary

What is the required quality factor for an SSB filter with the following data: center frequency= 1 MHz, the desired attenuation level of the unwanted sideband= 80 dB and the separation between sidebands= 200 Hz? A. 1,250 B. 12,500 C. 125,000 D. 25,000

Description : What is the required quality factor for an SSB filter with the following data: center frequency= 1 MHz, the desired attenuation level of the unwanted sideband= 80 dB and the separation between sidebands= 200 Hz? A. 1,250 B. 12,500 C. 125,000 D. 25,000

Last Answer : C. 125,000

What consists the front-end circuit of a VHF TV superheterodyne receiver? A. Mixer, RF amplifier and AFC? B. RF amplifier, Band pass filter and mixer C. Local oscillator, mixer and RF amplifier D. Local oscillator, AGC and antenna

Description : What consists the front-end circuit of a VHF TV superheterodyne receiver? A. Mixer, RF amplifier and AFC? B. RF amplifier, Band pass filter and mixer C. Local oscillator, mixer and RF amplifier D. Local oscillator, AGC and antenna

Last Answer : C. Local oscillator, mixer and RF amplifier

When adjusting an RF filter on a transmitter using a dummy load, how much watts dissipation should it stand to test a 150 watts transmitter? A. 75 watts B. 300 watts C. 50 watts D. 150 watts

Description : When adjusting an RF filter on a transmitter using a dummy load, how much watts dissipation should it stand to test a 150 watts transmitter? A. 75 watts B. 300 watts C. 50 watts D. 150 watts

Last Answer : D. 150 watts

How can intermodulation interference between two transmitters in close proximity reduced or eliminated? A. Through installing a band-pass filter in the antenna feed line B. Through installing terminated circulator or ferrite isolator in the feed line of the transmitter and duplexer C. By using a class C final amplifier with high driving power D. By installing a low-pass filter in the antenna feed line

Description : How can intermodulation interference between two transmitters in close proximity reduced or eliminated? A. Through installing a band-pass filter in the antenna feed line B. Through installing terminated circulator ... high driving power D. By installing a low-pass filter in the antenna feed line

Last Answer : A. Through installing a band-pass filter in the antenna feed line

Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

Description : Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

Last Answer : B. Low pass filter

______ is the first component of any MATV system to received broadcast signals. A. Receiver B. Antenna C. Filter D. Transmitter

Description : ______ is the first component of any MATV system to received broadcast signals. A. Receiver B. Antenna C. Filter D. Transmitter

Last Answer : B. Antenna

Why we use Filter?

Description : Why we use Filter?

Last Answer : While half-wave and full-wave rectification suffice to deliver a form of DC output, neither produces constant-voltage DC. In order to produce steady DC from a rectified AC supply, a smoothing ... There will still remain an amount of AC ripple voltage where the voltage is not completely smoothed.

What are the types of filter circuits?

Description : What are the types of filter circuits?

Last Answer : The types of filter circuits are Inductor filter Capacitor filter LC filter CLC or π filter

Which of the following filters block FM radio band for TV channels (2 to 13)? A. High-pass filter B. Band reject filter C. Low-pass filter D. Band-pass filter

Description : Which of the following filters block FM radio band for TV channels (2 to 13)? A. High-pass filter B. Band reject filter C. Low-pass filter D. Band-pass filter

Last Answer : B. Band reject filter

The ___________ filter attenuates signals but passes frequencies below and above that band. A. low pass B. band pass C. band stop D. high pass

Description : The ___________ filter attenuates signals but passes frequencies below and above that band. A. low pass B. band pass C. band stop D. high pass

Last Answer : C. band stop

What is a filter?

Description : What is a filter?

Last Answer : Filter is a frequency selective circuit that passes signal of specified band of frequencies and attenuates the signals of frequencies outside the band

What is the purpose of having a low pass filter in PLL?

Description : What is the purpose of having a low pass filter in PLL?

Last Answer : *It removes the high frequency components and noise. *Controls the dynamic characteristics of the PLL such as capture range, lock-in range,band-width and transient response. *The charge on the filter capacitor gives a short- time memory to the PLL

Define Piezoelectric effect.

Description : Define Piezoelectric effect.

Last Answer : When applying mechanical energy to some type of crystals called piezoelectric crystals the mechanical energy is converted into electrical energy is called piezoelectric effect.

Define non-inverting amplifier?

Description : Define non-inverting amplifier?

Last Answer : The input is applied to the non-inverting input terminal and the inverting terminal connected to the ground.

Define slew rate?

Description : Define slew rate?

Last Answer : Slew rate can be defined as the maximum rate of change of output voltage of op-amp with respect to time.

Define input bias current?

Description : Define input bias current?

Last Answer : It is defined as the average of the currents entering into the input terminals of an op-amp.

Define input offset current?

Description : Define input offset current?

Last Answer : It is defined as the algebraic difference between the current entering the inverting and non-inverting terminal of an op-amp.

Define input offset voltage?

Description : Define input offset voltage?

Last Answer : It is defined as the voltage that must be applied between the input terminals of an op-amp to nullify the output.

Define loading?

Description : Define loading?

Last Answer : A large value of Rc cannot be used in a circuit since,a large value of resistance requires a large chip area.For large Rc, quiescent drop across it increases and hence a large power supply is required ... source can also be used as an active load for an amplifier to obtain a very large voltage gain.

Define current amplification factor?

Description : Define current amplification factor?

Last Answer : It is defined as the ratio of change in output current to the change in input current at constant other side voltage.

Define PIV .

Description : Define PIV .

Last Answer : Peak inverse voltage is the maximum reverse voltage that can be applied to the PN junction without damage to the junction.

Define the term diffusion current?

Description : Define the term diffusion current?

Last Answer : A concentration gradient exists, if the number of either electrons or holes is greater in one region of a semiconductor as compared to the rest of the region. The holes and electron ... concentration. This process in called diffusion and the current produced due this movement is diffusion current.

Define drift current?

Description : Define drift current?

Last Answer : When an electric field is applied across the semiconductor, the holes move towards the negative terminal of the battery and electron move towards the positive terminal of the battery. This drift movement of charge carriers will result in a current termed as drift current.

Define Monostable Multivibrators

Description : Define Monostable Multivibrators

Last Answer : The monostable multivibrator or one –shot requires an external signal called a trigger to force the circuitinto a quasi stable state for a particular time or delay.

Define Astable Multivibrators.

Description : Define Astable Multivibrators.

Last Answer : The astable Multivibrators toggles between one state and the other without the influence of any other external control signal. It is also called as free running multivibrator.

Define Multivibrators. Mention its types.

Description : Define Multivibrators. Mention its types.

Last Answer : Multivibrators are regenerative circuits, Which are mainly used in timing applications. Based on their operational characteristics they can be classified into • Astable Multivibrators • Monostable Multivibrators • Bistable Multivibrators

Define load regulation.

Description : Define load regulation.

Last Answer : Load regulation is defined as the change in output voltage for a change in load current. It is expressed in millivolts or as a percentage of the output voltage. 

Define line regulation.

Description : Define line regulation.

Last Answer : Line regulation is defined as the percentage change in the output voltage for a change in the input voltage.It is expressed in millivolts or as a percentage of the output voltage. 

Define slope overload noise and granular noise.

Description : Define slope overload noise and granular noise.

Last Answer : Slope overload noise is introduced due to the use of a step size delta is too small To follow some portions of the waveform with a step size.   Granular noise results from using a step size that is too large in parts of the waveform having a small slope. 

Define Delta modulation.

Description : Define Delta modulation. 

Last Answer : Delta modulation is a technique in which derivative of the signal is quantized. The delta modulation shows slope overload for fast input signals and their performance is dependent on input signal frequency.

Define Dither.

Description : Define Dither.

Last Answer : It is a very small amount of random noise(white noise) which is added to the input before A/D conversion to improve the performance of A/D converter.

Define quantization error.

Description : Define quantization error.

Last Answer : In A/D converter the smallest digital step is due to the LSB and it can be made smaller only by increasing the number of bits in the digital representation. This error is called quantization error.

Define sample period and hold period.

Description : Define sample period and hold period.

Last Answer : The time during which the voltage across the capacitor in sample and hold circuit is equal to the input voltage is called sample period.The time period during which the voltage across the capacitor is held constant is called hold period. 

Define accuracy of converter.

Description : Define accuracy of converter.

Last Answer : Absolute accuracy: It is the maximum deviation between the actual converter output & the ideal converter output.  Relative accuracy: It is the maximum deviation after gain & offset errors have been removed. ... of a converter is also specified in form of LSB increments or % of full scale voltage.

Define resolution of a data converter.

Description : Define resolution of a data converter.

Last Answer : The resolution of a converter is the smallest change in voltage which may be produced at the output or input of the converter. Resolution (in volts)= VFS/2n-1=1 LSB increment. The resolution of an ADC is defined as the smallest change in analog input for a one bit change at the output.

Define conversion time.

Description : Define conversion time.

Last Answer : conversion time of a successive approximation type ADC is given by  T(n+1)  where T---clock period  Tc---conversion time  n----no. of bits

Define Voltage to Frequency conversion factor.

Description : Define Voltage to Frequency conversion factor. 

Last Answer : Voltage to Frequency conversion factor is defined as,  Kv = fo / Vc= 8fo /Vcc  Vc is the modulation voltage  fo frequency shift

Define free running mode .

Description : Define free running mode .

Last Answer : An interactive computer mode that allows more than one user to have simultaneous use of a program.

Define Pull-in time.

Description : Define Pull-in time.

Last Answer : The total time taken by the PLL to establish lok is called pull-in time.It depends on the initial phase and frequency difference between the two signals as well as on the overall loop gain and loop filter characteristics