1. . In Resistor–transistor logic (RTL) circuits _______ are used as the input network and _______ are used as switching devices.
(A) Resistors, bipolar junction transistors (BJTs)
(B) Bipolar junction transistors (BJTs), Resistors
(C) Capacitors, resistors
(D) Resistors, capacitors
2. . In Transistor–transistor logic (TTL), circuits are built from ____________
(A) JFET only
(B) Bipolar junction transistors (BJT) and resistors
(C) Resistors
(D) Bipolar junction transistors (BJT)
3. . In DTL logic gating function is performed by ___________
(A) Transistor
(B) Capacitor
(C) Inductor
(D) Diode
4. . Transistors used in RTL ICs have a dc forward current gain of about
(A) 120
(B) 60
(C) 90
(D) 30
5. . One common problem in all logic gates with a single output transistor and a pull-up collector resistor is
(A) Power dissipation
(B) Switching speed
(C) Noise margin
(D) Low power output
6. . The method of connecting a driving device to a loading device is known as ___________
(A) Sourcing
(B) Interface
(C) Compatibility
(D) Sinking
7. . Compatibility refers to ____________
(A) The output of a circuit should match with the input of another circuit
(B) The output of a circuit should match with the input of the same circuit
(C) The input of a circuit should match with the output of another circuit
(D) The input of a circuit should match with the output of same circuit
8. . Fan out (minimum) is greater than 50 in ______ logic family
(A) ECL
(B) IIL
(C) CMOS
(D) DTL
9. . Number of gates that each gate can drive is known as
(A) Standard load
(B) Fan-out
(C) Both a & b
(D) Neither a nor b
10. . The minimum output voltage in HIGH state (logic '1') VOHmin is _____ V for CMOS
(A) 2.4
(B) 4.9
(C) 5.8
(D) 15
11. . The maximum output voltage in LOW state (logic '0') VOLmax is ____ V for TTL
(A) 0.4
(B) 0.2
(C) 0.3
(D) 0.1
12. . The time needed for the output voltage to increase from VILmax to VIHmin is
(A) Rise time
(B) Transit time
(C) Delay time
(D) Fall time