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