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