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