The major elements of a communications system, are a ________ to send a message, a communications medium, a __________ to pick up the message, and _________.

_______ is crystal oscillator circuit that has best frequency stability.

_____ is ratio of RF output power to dc input power.

_______ is present with input signal only.

Collector current in Class C amplifier is ______

It is the back and forth oscillation of electrons in oscillator.

Transmission Medium provides a means of ________ between a transmitter and a receiver.

Crosstalk occurs due to _______

______ is circuit configuration for two for signal and two for ground.

Oscillator produces periodic waveform on its ouput with applied _______ supply.

It is the state when the VCO output frequency is locked equal to the frequency of the external input signal.

It is random acoustic or electric noise that has equal energy per cycle over a specified band.

It is the signal alteration due to imperfect response of system.

_____ is the non continuous noise of irregular pulses or spikes of duration with high amplitudes.

Atmospheric Noise cannot be ignored at the frequencies

Class B Amplifier has _____ Efficiency and ______ Fidelity.

it is used as frequency coupling.

________ refers to two or more locations in which information are exchanged.

______ is oscillator mode tuned at the third, fifth, seventh, or even the ninth harmonic of the crystal’s fundamental frequency.

The ______ feedback is coupled to Hartley oscillator via ______.

PLL is combined with ______ to produce multiple frequencies.

______ is the interference caused by rain or dust storms.

External Noise is measured in terms of ____ values.

It is the VCO’s output frequency when the PLL is locked.

_______ is the crosstalk due to incomplete suppression of sidebands which are untelligible.

_______ refers to a specific band of frequencies allocated a particular service.

The ______ feedback is coupled to Pierce oscillator via ______.

Class A Amplifier has _____ Efficiency and ______ Fidelity.

Noise generated directly from the sun’s heat.

______ is a medium used in SONAR or Sound Navigation for Radar.

_______ match impedance and provide isolation between two signal directions.

______ are used in LAN, or Local Network Area.

Electronic Communication System aims to _____

The ______ feedback is coupled to Colpitts oscillator via ______.

Hold In Range is the ____ of lock range.

_______ is the process of extracting information from high frequency.

Transmitters are made up of following except ______

Communication is the process of ______ information.

_______ is the minimum frequency separation between output frequencies for a synthesizer.

_______ accepts transmitted signal, and converts it back to its original form.

_______ is the device that measures internal open circuit voltage of an equivalent noise generator.

The order of Q required by tank circuit to reduce harmonics is approximately ________.

______ is medium used for carrying low frequency signals.

A noise measured on a circuit when it is correctly terminated but does not have any traffic.

_______ is used for remote control of electrical equipment.

It refers to frequency acquisition.

_____ is frequency synthesis where a feedback-controlled divider/multiplier is used to generate multiple output frequencies.

Extraterrestial Noise is observable at frequencies from _____

It is the state when the PLL is in the process of acquiring frequency lock.

_______ is caused by thermal agitation of particles in a resistive material.

What disrurb or detract form?

Which of the following Fidelity and Efficiency is Class AB Amplifier?

It is the parameter of divider between VCO and phase detector, in which determines output frequency of synthesizer.

GT Cut Crystal Is almost a perfect zero-coefficient crystal from freezing to boiling but is useful only at frequencies below ______

Pierce oscillator does not require LC Tank

_______ is the wireless media that uses propagate signal, through electromagnetic field.

Device that uses an echo-reflecting technique similar to that used in radar for determining how far away objects under water.

_______ consists of electrical signals that originate from outside Earth’s atmosphere.

________ is the transmission, reception, and processing of information between two or more locations using electronic circuits.

When there is increase in resistance, the noise power _____

It is a closed-loop feedback control system in which either the frequency or the phase of the feedback signal is the parameter.

What kind of noise are continuously distributed throughout the galaxies?

_______ are signalsmade up of electric and magnetic fields, that propagate over long distances.

_________ is the noise produced within the system.

It is bias for Class C Amplifier that is produced by Resistor Capacitor Network

_______ is a crystal oscillator circuit that has low cost and simple digital interfacing capabilities.

________ converts information signal into form suitable for transmission.

Frequency Synthesizer has basic circuit of ____

It is free-running oscillator with a stable frequency of oscillation, that depends on an external timing capacitance, timing resistance, and control voltage.

_______ is present with or without input signal.

What noise that is naturally occurring electrical disturbances that originate within Earth’s atmosphere?

______ is the medium by which the electronic signal is sent from one place to another.

______ is noise produced when signal that fall outside their allocated bandwidth and interfere with other signals.

_____ are pair of wires, that transmit voice signals from microphone in its simplest form.

It is characterized by high-amplitude peaks of short duration in the total noise spectrum.

________ is the term for any form of wireless communication from one point to another.

Industrial Noise is man made noise with frequency from

_______ is a light pipe, used to carry long distance calls, and internet communications.

When there is increase in temperature, ______

Discrete Pierce Oscillator, is a crystal oscillator circuit that is used due to ____

Noise always affect the communication systems at _____.

Psophometer has generator with 600 Ohm load and _____ load.

In broadcast station, Automatic Gain Control is also referred as ________

_____ is frequency synthesis where multiple output frequencies are generated by mixing the inputs.

______ is the interference coming from other channels.

Peak solar noise occurs every _____ years.

What is crystal utilized in Colpitts oscillator?

The three major fields of electronics are ______, ______, and ________

______ is a device used as frequency multiplier or divider.

It is the VCO’s output frequency when the PLL is not locked.

What process is performed at transmitter?

Network consists _____ inductor and _____ capacitors.

__________ is the process of converting a frequency or band of frequencies, to another location in the total frequency spectrum.

Colpitts oscillator is commonly used in VFO because ________

what carries TV signals?

____ is circuit configuration for one wire for signal and one for ground.

It is added to the circuit to compensate for variations due to heat.

Class C Amplifier has Fidelity less than _______ and Efficiency close to ______

______ is random, unpredictable, and unwanted signals.

Device that listens for underwater sounds with sensitive hydrophones.