A) low accuracy B) large number of comparators required C) slow operation D) high quantization error
A) remove high-frequency noise B) amplify the signal C) hold the input signal constant during conversion D) generate clock pulses
A) encoding B) Sampling C) quantization D) filtering
A) ratio of signal to noise B) sampling frequency error C) difference between actual and quantized value D) sum of all sampled values
A) dividing the signal into equal voltage levels B) taking discrete time samples of a continuous signal C) converting binary to decimal D) filtering unwanted frequencies
A) output current B) quantization error C) resolution speed D) sampling frequency
A) both input and output impedances are zero B) infinite input impedance and zero output impedance C) both input and output impedances are infinite D) zero input impedance and infinite output impedance
A) ground terminal B) inverting input C) output terminal D) non-inverting input
A) differential amplifier B) summing amplifier C) comparator D) integrator
A) reduce distortion and stabilize gain B) increase gain C) reduce bandwidth D) increase input impedance
A) half the signal frequency B) twice the highest signal frequency C) four times the signal frequency D) equal to the signal frequency
A) Nyquist theorem B) Fourier theorem C) Kirchhoff's theorem D) Ohm's law
A) encoding binary data B) filtering the analog signal C) converting each sample into discrete amplitude levels D) sampling the signal in time
A) counting clock pulses during conversion B) sampling only at zero crossings C) integrating input voltage over time D) comparing input voltage with reference voltages step-by-step
A) voltage follower B) non-inverting amplifier C) inverting amplifier D) differential amplifier
A) analog-to-digital Conversion B) modulation C) digital-to-analog Conversion D) demodulation
A) generate clock pulses B) remove high-frequency noise C) hold the input signal constant during conversion D) amplify the signal
A) Digital B) Analog
A) Doubles B) Decreases C) Remains the same D) Increases
A) Period B) Propagation speed C) Frequency D) Throughput
A) 1 second B) 0.001 seconds C) 0.1 seconds D) 0.01 second
A) Phase B) Frequency C) Sine wave D) Digital signal
A) Diode B) Composet Signal C) Transistors D) resistor
A) 3.96 MHz B) 396 kHz C) 36 MHz D) 360 kHz
A) 1947 B) 1948 C) 1950 D) 1947
A) 1908 B) 1907 C) 1906 D) 1910
A) Wavelength B) Phase C) Peak amplitude D) Frequency
A) 1971 B) 1975 C) 1972 D) 1978
A) Analog B) Digital
A) Bps B) Bit rate C) Baud rate D) Digital signal
A) Periodic and discrete B) Aperiodic and continuous C) Periodic and continuous D) Aperiodic and discrete
A) Digital modulation B) Analog modulation C) PSK D) ASK
A) Aperiodic and continuous B) Capture effect C) Fourier analysis
A) DIGITAL ELECTRONICS B) COMMUNICATION ELECTRONICS C) ELECTRIC POWER D) AUTOMOTIVE ELECTRONICS
A) No Answer B) Reflection C) Noise D) Distortion
A) VACUUM TUBE DIODE B) VACUUM TUBE TRIODE C) VACUUM TUBES D) VACUUM TUBE TETRODE
A) Digital Modulation B) ASK C) Analog modulation D) PSK
A) Throughput B) Propagation speed C) Propagation time
A) Propagation time B) Wavelength C) Phase D) No answer
A) Power B) Time C) Phase D) Bandwidth
A) 5 bits/second B) 50 bits/second C) 5000 bits/second D) 500 bits/second
A) VACUUM TUBE TRIODE B) VACUUM TUBE DIODE C) VACUUM TUBE TETRODE D) VACUUM TUBE
A) VACUUM TUBE PENTODE B) VACUUM TUBE TETRODE C) VACUUM TUBE D) VACUUM TUBE TRIODE
A) Channel B) Amplifier C) Transducer D) Repeater
A) ELECTRIC POWER B) INDUSTRIAL ELECTRONICS C) COMMUNICATIONS ELECTRONICS D) DIGITAL ELECTRONICS
A) Operational Amplifier B) Differential Amplifier
A) VACUUM TUBE DIODE B) VACUUM TUBE TETRODE C) VACUUM TUBE
A) Propagation speed B) Throughput C) wavelength
A) VACUUM TUBE DIODE B) VACUUM TUBES C) VACUUM TUBE TRIODE D) VACUUM TUBE TETRODE
A) Input transducer B) Encoder C) Output transducer D) Repeater
A) Wavelength B) Phase C) Propagation time D) No answer
A) Electronics B) Electronics C) Physics D) Mechatronics
A) Wavelength B) Time C) Peak amplitude D) Frequency
A) Transducer B) ICs C) Amplifier D) Transponder
A) 5 Petabits/second B) 10 Terabits/second C) 50 Terabits/second D) 5 Terabits/second
A) User B) Sender C) Amplifier D) Channel
A) AUTOMOTIVE ELECTRONICS B) INDUSTRIAL ELECTRONICS C) ELECTRIC POWER D) DIGITAL ELECTRONICS
A) Decibel B) Distortion C) Attenuation D) Crosstalk
A) Propagation time B) Propagation speed C) Throughput D) No answer
A) Digital modulation B) Transponder C) Amplifier D) Analog modulation
A) Channel B) Amplifier C) User D) Sender
A) low power consumption B) very high speed C) low cost D) simplicity
A) sinusoidal waveform B) binary form C) current form D) analog voltage
A) Very high B) Zero C) Very small D) One
A) differential amplifier B) integrator C) summing amplifier D) comparator
A) Magnetic sensor B) Sound sensor C) Light sensor D) Motion sensor
A) A device that controls current flow B) a device that amplifies signals C) A device that stores data D) a device that converts one form of energy into another
A) control power supply B) increase memory size C) measure time intervals or generate delays D) store program code
A) the positive output voltage B) the non-inverting input terminal C) the feedback terminal D) the positive supply voltage
A) reduce distortion and stabilize gain B) increase input impedance C) Reduce bandwidth D) increase gain
A) Equal to the signal frequency B) four times the signal frequency C) twice the highest signal frequency D) half the signal frequency
A) Osampling only at zero crossings B) counting clock pulses during conversion C) integrating input voltage over time D) comparing input voltage with reference voltages step-by-step
A) Non inverting input B) Grounded terminal C) Inverting input
A) 1947 B) 1906 C) 1904 D) 1901
A) MEDICAL ELECTRONICS B) AUTOMOTIVE ELECTRONICS C) INDUSTRIAL ELECTRONICS D) DIGITAL ELECTRONIC
A) 1960 B) 1961 C) 1959 D) 1958
A) Capture effect B) Crosstalk C) Attenuation D) Distortion
A) VACUUM TUBE TETRODE B) VACUUM TUBE TRIODE C) VACUUM TUBE DIODE D) VACUUM TUBE DIODE
A) VACUUM TUBE TRIODE B) VACUUM TUBE TETRODE C) VACUUM TUBE DIODE D) VACUUM TUBE PENTODE
A) input signal power B) power dissipated in the last stage C) power from the DC power supply
A) heat sink B) inductor C) capacitor D) transformer
A) Very high B) Very low C) The same as class B D) the same as class A
A) Rectifier B) Oscillator C) Band-pass filter D) power amplifier
A) Gain B) power gain C) SNR D) Efficiency
A) 270⁰ B) 360⁰ C) 90° D) 180°
A) Class AB B) Class C C) Class B D) Class A
A) higher than class B B) slightly less than class B C) the same as class B D) about the same as a class A
A) low power output B) high heat generation C) high cost D) crossover distortion
A) 40% B) 20% C) 79% D) 95%
A) power amplifier B) Rectifier C) Band-pass filter D) Oscillator
A) all of the input cycle B) more than 180 degrees of input cycle C) a very small percentage of the input cycle D) one-half of the input cycle
A) Gain B) SNR C) efficiency D) power gain
A) Power amplifier B) Voltage amplifier C) Mixer circuit D) Operational amplifier
A) Class D B) Class B C) Class C D) Class A
A) Reduce power consumption B) Increase signal power to drive a load C) Signal generation D) Signal filtering
A) class AB B) Class A C) Class B D) Class C
A) greater than classes A, AB, B B) Less than class B C) Less than class AB D) Less than class A
A) precision measurement instruments B) low noise preamplifiers C) precision measurement instruments D) portable battery-operated devices
A) current mirror B) differential C) voltage-divider D) Push-pull
A) Low efficiency and low distortion B) High efficiency and high distortion C) Low efficiency and high distortion D) High efficiency and low distortion |