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