DIGITAL ELECTRONICS 1
DIODE
BJT
DIGITAL ELECTRONICS 2
MIXTURE
100
NAND AND NOR GATES
WHAT ARE UNIVERSAL GATES?
100
To produce P-type semiconductors, you need to add
Trivalent impurity
100
Lightly Doped
The doping concentration of Base in NPN Transistor
100
When both inputs of a J-K flip-flop cycle, the output will:
TOGGLE
100
The 555 timer can be used in which of the following configurations?
A.astable, monostable
B.monostable, bistable
C.astable, toggled
D.bistable, tristable
A.astable, monostable
200
SUCCESSIVE DIVISION AND SUCCESSIVE MULTIPLICATION
METHOD USED TO CONVERT ANY NUMBER SYSTEM TO DECIMAL NUMBER SYSTEM
200
A p-type semiconductor contains
A. Holes and Negative ions
B. Holes and Positive ions
C. Holes and Pentavalent atoms
D. Holes and Donor atoms
Holes and Negative ions
200
The size comparison between Base, Emitter and Collector is
A. Base > Collector > Emitter
B. Emitter > Collector > Base
C. Collector > Emitter > Base
D. All are equa
Collector > Emitter > Base
200
Convert 110010012 (binary) to decimal.
201
200
Another name for a unity gain amplifier is:
A.difference amplifier
B.comparator
C.single ended
D.voltage follower
D.voltage follower
300
The output will be a LOW for any case when one or more inputs are zero in
AND GATE
300
The reverse saturation current in a Silicon Diode is _____ than that of Germanium Diode
Lower
300
If base current is 100µA and current gain is 100, then collector current is
10mA
300
What is the significance of the J and K terminals on the J-K flip-flop?
A.There is no known significance in their designations.
B.The J represents "jump," which is how the Q output reacts whenever the clock goes HIGH and the J input is also HIGH.
C.The letters represent the initials of Johnson and King, the co-inventors of the J-K flip-flop.
D.All of the other letters of the alphabet are already in use.
A.There is no known significance in their designations.
300
The closed-loop voltage gain of an inverting amplifier equals:
A.the ratio of the input resistance to the feedback resistance
B.the open-loop voltage gain
C.the feedback resistance divided by the input resistance
D.the input resistance
the feedback resistance divided by the input resistance
400
Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?
A.OR gates only
B.AND gates and NOT gates
C.AND gates, OR gates, and NOT gates
D.OR gates and NOT gates
C.AND gates, OR gates, and NOT gates
400
When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is considered to be:
FORWARD BIASED
400
The input AND output impedance of Common Emitter Configuration is
low and high
400
One application of a digital multiplexer is to facilitate:
A.code conversion
B.parity checking
C.parallel-to-serial data conversion
D.data generation
C.parallel-to-serial data conversion
400
Which output expression might indicate a product-of-sums circuit construction?
A.
B.
C.
D.
D
500
A NAND gate has:
A.LOW inputs and a LOW output
B.HIGH inputs and a HIGH output
C.LOW inputs and a HIGH output
D.None of the these
C.LOW inputs and a HIGH output
500
The peak inverse voltage (PIV) across a nonconducting diode in a bridge rectifier equals approximately:
A.half the peak secondary voltage
B.twice the peak secondary voltage
C.the peak value of the secondary voltage
D.four times the peak value of the secondary voltage
A.half the peak secondary voltage
500
In CE Configuration the output characteristic curve is a graph showing:
A.emitter current (IE) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
B.collector current (IC) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
C.collector current (IC) versus collector-emitter voltage (VC) with (VBB) base bias voltage held constant
D.collector current (IC) versus collector-emitter voltage (VCC) with (VBB) base bias voltage held constant
B
500
A basic S-R flip-flop can be constructed by cross-coupling which basic logic gates?
A.AND or OR gates
B.XOR or XNOR gates
C.NOR or NAND gates
D.AND or NOR gates
C.NOR or NAND gates
500
The observation that a bubbled input OR gate is interchangeable with a bubbled output AND gate is referred to as:
A.a Karnaugh map
B.DeMorgan's second theorem
C.the commutative law of addition
D.the associative law of multiplication
B.DeMorgan's second theorem