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