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