1) If power dissipation and propagation delay in a logic circuit are estimated to be 55mW and 20ns respectively, what will be its figure of merit?
a. 1.10 nanojoule
b. 1.65 nanojoule
c. 2.50 nanojoule
d. 5.5 nanojoule
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2) What does the diode D3 represents in the equivalent circuit of Multiple Emitter Transistor shown below?
a. Base to emitter junction
b. Collector to base junction
c. Collector to emitter junction
d. Emitter to emitter junction
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3) Which is the correct order of sequence for representing the input values in K-map?
a. (00, 01, 10, 11)
b. (00, 10, 01, 11)
c. (00, 01, 11, 10)
d. (00, 10, 11, 01)
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4) Which is the simplified equation of output for K-map consisting of four adjacent ones, given below?
a. A B
b. BD
c. CD
d. ABD
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5) Which type of combinational logic circuit is shown below?
a. Multiplexer
b. Demultiplexer
c. Encoder
d. Comparator
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6) Which among the following is an octal to binary priority encoder?
a. 74147
b. 74148
c. 74149
d. 74150
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7) Which flip-flop plays a vital role by functioning as the basic building block of a ripple counter?
a. S-R flip-flop
b. J-K flip-flop
c. D flip-flop
d. T flip-flop
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8) Which among the following is not a mode of Flip Flop representation?
a. Characteristic Equations
b. Excitation Tables
c. Finite State Machines (FSM)
d. Variable Entered Mapping (VEM)
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9) In a sequence detector, if the required bit is at its input while checking the sequence bit by bit, the detector moves to ________
a. Previous state
b. Next state
c. Remains in the same state (present state)
d. Null state
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10) Which among the following sequential logic circuits are adopted for the designing of a sequence generator?
a. Shift Registers
b. Counters
c. Both a and b
d. None of the above
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11) From the diagram shown below, if the circuit enters into state '5', its next state will be '7'. If the circuit further enters at state'7', then what would be the desirable next state for avoiding the lock out condition?
a. 0
b. 3
c. 5
d. 7
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12) Which among the following are the sequential circuits entering into the phenomenon of lock out condition?
a. Bush circuits
b. Bushless circuits
c. Locked circuits
d. Unlocked circuits
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13) How many 'D' flip flops will be required for designing the synchronous counter for the state diagram shown below?
a. 2
b. 3
c. 5
d. 7
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14) The mechanism of 'Bushing' specifically refers to the addition of __________ in the state diagram
a. Nodes
b. Branches
c. Loops
d. States
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15) From the K-map given below, what would be the state equation of D Flip Flop?
a. Qn+1 = QnD
b. Qn+1 = QnD
c. Qn+1 = D
d. Qn+1 = D
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16) In the below drawn schematic, what does an arrow between the circles indicate?
a. Present state
b. Next state
c. State transition
d. Don't care condition
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17) Which among the following statement/s is/are not an/the advantage/s of Programmable Logic Devices (PLDs)?
a. Short design cycle
b. Increased space requirement
c. Increased switching speed
d. All of the above
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18) What do the Programmable Logic Devices (PLDs) designed specially for the combinational circuits comprise?
a. Only gates
b. Only flip flops
c. Both a and b
d. None of the above
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19) With the availability of 16 x 4 memory size, how many ICs ( memory chips) will be required for the expansion of its word size in order to obtain 16 x 8 memory?
a. 2
b. 4
c. 8
d. 16
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20) What is the bit storage capacity of TTL RAM cell?
a. 0
b. 1
c. 4
d. 16
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21) Which components play a significant role in the formation of a dynamic RAM?
a. Two MOSFETs
b. Two capacitors
c. One MOSFET and one capacitor
d. One MOSFET and two capacitors
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22) Which signal is used to transfer the stored data into RAM?
a. Store
b. Load
c. Recall
d. Move
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23) Which among the following ROMs exhibit/s the necessity of eliminating the PROM from the circuit?
a. EPROM
b. EEPROM
c. Both a and b
d. None of the above
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24) What does an arrow indicate in the schematic format of process statement given below?
a. Variable declaration
b. Process body
c. Process label
d. Sensitivity list
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25) Which among the following does not belong to the category of sequential statements?
a. If statements
b. Process statements
c. Loop statements
d. Node statements
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26) Which type of logic is produced by case statements?
a. Serial logic
b. Parallel logic
c. Priority encoded logic
d. Priority decoded logic
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27) Which among the following is not a type of concurrent statement?
a. Simple signal assignment
b. Selected signal assignment
c. Generate statement
d. Direct Instantiation
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28) Match the following value kind attributes with their return elements :
A. Value Type attribute -------------------- 1) Length
B. Value Array attribute ------------------- 2) Information
C. Value Block attribute ------------------- 3) Bounds
a. A- 3, B- 1, C- 2
b. A- 1, B- 2, C- 3
c. A- 2, B- 1, C- 3
d. A- 2, B- 3, C-1
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