# Computer-Bachelor of Computer Applications MCQs set/2 Sample Test,Sample questions

1.NAND gate

2.XOR gate

3.AND gate

4.OR gate

1.AND

2.OR

3.EXOR

4.NOR

## Question: Conversion from prefix to postfix expression can be done _______________

1.using bubble sort

3.using two queues

4.in a direct manner

1.nMOS

2.pMOS

3.pseudo nMOS

4. CMOS

## Question: Electronic circuits that operate on one or more input signals to produce standard output _______

1.Series circuits

2.Parallel Circuits

3.Logic Signals

4.Logic Gates

1.nMOS

2. pseudo nMOS

3. pseudo nMOS

4.pMOS

1.*45-/32+9

2.*+453/-29

3.-+*45/329

4.*+/45932

1.ab+cd/*-e

2.ab/cd*+e-

3.abc/+d*-e

4.abcd/+*-e

## Question: For minimum D consider

1.Ln = Lp = 2Î»

2.Ln greater than Lp = 2Î»

3. Lp greater than Ln

4.Lp = 2Ln

## Question: High and low noise margins can be equalized by

1.Î²n = Î²p

2.Î²n greater than Î²p

3.Î²n lesser than Î²p

4.Lp = 2Ln

1.7

2.12

3. 4

4.8

## Question: In BiCMOS inverter, the BJT used are __________

1.Only Npn BJT

2.Only Pnp BJT

3.Both npn and pnp BJT

4.Multi emitter npn BJT

## Question: In BiCMOS, the analysis of the operation of BJT is well explained by ___________

1.RC Model

2.Emitter resister model

3.Ebers Moll Model d) Hybrid model

4.Ebers Moll Model d) Hybrid model

1.0 and 1

2.2 and 5

3.1 and 15

4.4 and 8

## Question: In infix to postfix conversion algorithm, the operators are associated from?

1.right to left

2.left to right

3.centre to left

4.centre to right

## Question: In Multiplexer gate, for selecting the inputs, two bits named _____ and _____ are required generally.

1.selector bit, data bit

2.parity bit. Generator bit

3.input bit, inverted bit

4.raising bit, sinking bit

1.1239

2.213

3.13

4.1387

1.NOR gate

2.NAND gate

3.X-NOR gate

4.XOR gate

## Question: In which logic gate the output state is usually the complement of the input state?

1.NOT gate

2.NOR gate

3.X-NOR gate d) OR gate

4.X-NOR gate d) OR gate

## Question: Infix to prefix conversion can be done using __________

1.two queues

2.two stacks

3.one stack and two queues

4. one stack

1.tr

2.tf

3.tr-tf

4.tr+tf

## Question: Prefix expression can be evaluated _________

1.from right to left

2.from left to right

3.from the exact middle

4.from second right element

1.Lp = Ln = Î»

2.Lp = Ln = Î»/2

3.Lp = Ln = 2Î»

4.2Lp = Ln = Î»

## Question: The BiCMOS are preferred over CMOS due to ______________

1.Switching speed is more compared to CMOS

2.Sensitivity is less with respect to the load capacitance

3.High current drive capability

4.All of the mentioned

## Question: The Bipolar Transistor is fabricated on __________

1.Same substrate of nMOS

2.N-well in p Substrate

3.P-well in n Substrate

4.Same substrate of pMOS

1.A.B

2.Aâ€™B+ABâ€™

3.A+B

4.Aâ€™Bâ€™

## Question: The collector contact region is doped with higher concentration of n-type impurities due to __________

1.It creates a depletion region at the contact surface

2.It creates a low conductivity path between collector region and contact

3.It reduces contact resistance

4.It can withstand high voltages as compared to collector region

1.Aâ€™B+ABâ€™

2.AB+Aâ€™Bâ€™

3.A+A.B

4.Aâ€™+Bâ€™

1.NOR

2.NAND

3.EXOR

4.NOT

1.NOR

2.NAND

3.EXOR

4.NOT

## Question: The high current driving capability of the BiCMOS is due to __________

1.NMOS in saturation mode

2.PMOS in saturation mode

3. CMOS

4.BJT

## Question: The n-well collector is formed by __________

1.Lightly doped n-type epitaxial layer on p-Substrate

2.Heavily doped n-type epitaxial layer on p-Substrate

3.Lightly doped n-type diffused layer on p-Substrate

4.Heavily doped n-type diffused layer on p-Substrate

## Question: The n-well created for Bipolar Transistor in BiCMOS is used as __________

1.Substrate

2.Collector

3.Emitter

4.None of the mentioned

## Question: The transistors used in BiCMOS are __________

1.BJT

2.MOSFET

3.Both BJT and MOSFETs

4. JFET

1.NAND

2.EXOR

3.OR

4.AND

1.register

2.transistor

3.latch

4. flip-flop

## Question: What is the postfix expression of (A+B)-C*(D/E))+F?

1.A B + C D E / * â€“ F +

2.A B C D E + / * F â€“ +

3.A B C + * D E / F + â€“

4.A B + C â€“ * D E / F +

## Question: What is the postfix expression of 9+3*5/(10-4)?

1.9 3 + * 5 / 10 4 â€“

2.9 3 5 + * / 10 4 â€“

3.9 3 + 5 * / 10 4 â€“

4.9 3 5 * / + 10 â€“ 4

## Question: What is the postfix expression of the given expression, (2*4-(5+7/3^4)-8)10?

1.2 4 5 * 7 3 4 ^ / + 8 â€“ â€“ 10

2.2 4 * ^ 5 7 3 4 / + 8 10 â€“ â€“

3.2 4 * 5 7 ^ 3 4 / + â€“ 8 10 â€“

4.2 4 * 5 7 3 4 ^ / + â€“ 8 â€“ 10

## Question: What is the work of BJT in BiCMOS?

1.Current controlled Voltage source

2.Voltage controlled Current source

3.Current controlled current source

4.Voltage controlled current source

## Question: What should be done when a left parenthesis â€˜(â€˜ is encountered?

1.It is ignored

2.It is placed in the output

3.It is placed in the operator stack

4.The contents of the operator stack is emptied

1.combinational

2.sequential

3.systematic

4.hardwired

## Question: When Zp.d. or Zp.u. increases, delay

1.increases

2.decreases

3.remains the same

4. delay becomes zero

1.AND

2.OR

3.NAND

4.EXOR

## Question: Which of the following gates is used to implement a logical conditional?

1.OR gate

2.Magnetic logic gate

3.XOR gate

4.IMPLY gate

## Question: Which of the following gates is used to implement a logical conditional?

1.OR gate

2.Magnetic logic gate

3.XOR gate

4. IMPLY gate

1.(a+b)*(c+d)

2.ab+c*

3. +ab

4.abc+*

## Question: Which of the following is built exclusively from NOR gate?

1.Plant guard machine

2.Apollo Guidance Computer

3.Street market app

4.Dish washer

## Question: Which of the following is the drawback of the BiCMOS circuits?

2.Bipolar transistors are used for driving current to the load capacitance but not for the logic operations

3.Increased fabrication Complexity

4.All of the mentioned

## Question: Which of the following statement is incorrect with respect to infix to postfix conversion algorithm?

1.operand is always placed in the output

2.operator is placed in the stack when the stack operator has lower precedence

3.parenthesis are included in the output d) higher and equal priority operators follow the same condition

4.higher and equal priority operators follow the same condition

## More MCQS

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