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# DIGITAL ELECTRONICS QUIZ

• A:  11.5mA
• B:  15.5mA
• C:  22.9mA
• D:  50.23mA

#### Q:   A measurement of maximum speed at which DACs circuitry can operate and still produce correct output is called ____.

• A:  Maximum Sampling Rate
• B:  Minimum Sampling Rate
• C:  Maximum Summation Rate
• D:  Minimum Summation Rate

#### Q:   Voltage gain 'Av ' of transistor amplifier (where r' =internal resistance) can be calculated as____.

• A:  RC /r'e(emitter)
• B:  RC/r'c(collector)
• C:  RC/r'b(base)
• D:  RC/r'D(drain)

• A:  0.33
• B:  3.33
• C:  33.33
• D:  333.33

#### Q:   When emitter is at ground, Voltage at collector of general BJT model will be____.

• A:  VBB (base supply)+VBE
• B:  VBB (base supply)-VBE
• C:  VBB (base supply)+VBE /RB
• D:  VCC (collector supply)-VRC(Collector connected resistor)

#### Q:   An ideal DAC converts abstract numbers into a conceptual sequence of____.

• A:  Impulses
• B:  Signals
• C:  Quantizations
• D:  Summations

#### Q:   LED seven-segment display uses seven individual____.

• A:  Light emitting diodes
• B:  Light restoring diodes
• C:  Capacitors
• D:  Inductors

#### Q:   An ADC works by sampling value of input at____.

• A:  Discrete intervals
• B:  Continuous intervals
• C:  Exponential intervals
• D:  Determinant intervals

• A:  Noise
• B:  Sound
• C:  Light
• D:  Wave

#### Q:   Region or mode in which emitter and collector regions switch roles is called____.

• A:  Forward active mode
• B:  Reverse active mode
• C:  Cut-off mode
• D:  Saturation mode