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