Basic Electronics
The picture tube in our TV set and the display terminal of most computers are
optical fibers
cathode-ray tubes
plastic cover
deflecting plates
cathode-ray tubes
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The number of electrons reaching the screen determines the screen’sA. size
B. brightness
C. frequency
D. amplitude
To display heartbeats, waveforms and measuring voltages we use
A. cystoscope
B. gastroscope
C. microscope
D. cathode-ray oscilloscope
The cathode rays carry
A. positive charge
B. neutral
C. negative charge
D. positrons
An alternating voltage varying between the maximum value of +5V and the minimum value of โ5V is
A. digital signal
B. analogue signal
C. Wi-Fi signal
D. current signal
For thermionic emission, the voltage applied should be of
A. 5 V
B. 7 V
C. 8 V
D. 6 V
NAND operation is simply AND operation followed by
A. OR
B. NOR
C. AND
D. NOT
NOT gate is also called
A. fusioner
B. diverter
C. convertor
D. inverter
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