Vlsi Design And Testing — Part 2 MCQs with Explanations
Practice high-yield Electronics & Communications Engineering MCQs on Vlsi Design And Testing — Part 2 with worked academic solutions for FPSC, PPSC, PTA, PAEC, NTS.
Questions
40
Difficulty Level
Exam-Level
Target Exams
FPSC, PPSC, PTA...
Estimated Time
48 mins
Exam-Level FPSC PPSC PTA PAEC NTS
Verified for Commission Syllabus • Oct 14, 2026
40
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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🎉 Set complete! All 40 questions answered.
Question 1 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Which has better I/A?
Correct Answer: Option B — Bipolar
Detailed Academic Explanation:
Bipolar is the correct answer to “Which has better I/A”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 2 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In CMOS fabrication, the photoresist layer is exposed to . . . . . . . .
Correct Answer: Option B — Ultraviolet light
Detailed Academic Explanation:
Ultraviolet light is the correct answer to “In CMOS fabrication, the photoresist layer is exposed to . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 3 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Speed power product is measured as the product of . . . . . . . .
Correct Answer: Option A — Gate switching delay and gate power dissipation
Detailed Academic Explanation:
Gate switching delay and gate power dissipation is the correct answer to “Speed power product is measured as the product of . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 4 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In CMOS inverter, transistor is a switch having . . . . . . . .
Correct Answer: Option B — Finite off resistance
Detailed Academic Explanation:
Finite off resistance is the correct answer to “In CMOS inverter, transistor is a switch having . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 5 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
If both the transistors are in saturation, then they act as . . . . . . . .
Correct Answer: Option A — Current source
Detailed Academic Explanation:
Current source is the correct answer to “If both the transistors are in saturation, then they act as . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 6 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Substrate bias voltage is positive for nMOS.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “Substrate bias voltage is positive for nMOS.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 7 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What are the advantages of BiCMOS?
Correct Answer: Option D — All of the mentioned
Detailed Academic Explanation:
All of the mentioned is the correct answer to “What are the advantages of BiCMOS”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 8 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In nMOS inverter configuration depletion mode device is called as . . . . . . . .
Correct Answer: Option A — Pull up
Detailed Academic Explanation:
Pull up is the correct answer to “In nMOS inverter configuration depletion mode device is called as . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 9 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
The BiCMOS are preferred over CMOS due to . . . . . . . .
Correct Answer: Option D — All of the mentioned
Detailed Academic Explanation:
All of the mentioned is the correct answer to “The BiCMOS are preferred over CMOS due to . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 10 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Depletion mode transistor should be large.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “Depletion mode transistor should be large.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 11 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
BJT gain should be . . . . . . . . to avoid latch-up effect.
Correct Answer: Option B — Decreased
Detailed Academic Explanation:
Decreased is the correct answer to “BJT gain should be . . . . . . . . to avoid latch-up effect.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 12 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
The difficulty in achieving high doping concentration leads to . . . . . . . . .
Correct Answer: Option B — Error in variation
Detailed Academic Explanation:
Error in variation is the correct answer to “The difficulty in achieving high doping concentration leads to . . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 13 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Eds is given by . . . . . . . .
Correct Answer: Option A — $$\frac{{Vds}}{L}$$
Detailed Academic Explanation:
$$\frac{{Vds}}{L}$$ is the correct answer to “Eds is given by . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 14 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Photoresist layer is formed using . . . . . . . .
Correct Answer: Option B — Light sensitive polymer
Detailed Academic Explanation:
Light sensitive polymer is the correct answer to “Photoresist layer is formed using . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 15 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
How many transistors might bring up latch up effect in p-well structure?
Correct Answer: Option A — Two
Detailed Academic Explanation:
Two is the correct answer to “How many transistors might bring up latch up effect in p-well structure”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 16 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the condition for non saturated region?
Correct Answer: Option C — Vds lesser than Vgs - Vt
Detailed Academic Explanation:
Vds lesser than Vgs - Vt is the correct answer to “What is the condition for non saturated region”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 17 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
If βn = βp, then Vin is equal to
Correct Answer: Option D — 0.5Vdd
Detailed Academic Explanation:
0.5Vdd is the correct answer to “If βn = βp, then Vin is equal to”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 18 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
BiCMOS is . . . . . . . .
Correct Answer: Option A — Unidirectional
Detailed Academic Explanation:
Unidirectional is the correct answer to “BiCMOS is . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 19 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
When the threshold voltage is more, leakage current will be?
Correct Answer: Option B — Less
Detailed Academic Explanation:
Less is the correct answer to “When the threshold voltage is more, leakage current will be”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 20 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
A fast circuit requires . . . . . . . . .
Correct Answer: Option A — High gm
Detailed Academic Explanation:
High gm is the correct answer to “A fast circuit requires . . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 21 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the feature of vector scanning?
Correct Answer: Option A — Faster
Detailed Academic Explanation:
Faster is the correct answer to “What is the feature of vector scanning”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 22 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What can be introduced to reduce the latch-up effect?
Correct Answer: Option B — Guard rings
Detailed Academic Explanation:
Guard rings is the correct answer to “What can be introduced to reduce the latch-up effect”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 23 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In depletion mode pull-up, dissipation is high since current flows when?
Correct Answer: Option A — Vin = 1
Detailed Academic Explanation:
Vin = 1 is the correct answer to “In depletion mode pull-up, dissipation is high since current flows when”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 24 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Medium scale integration has . . . . . . . .
Correct Answer: Option C — Hundred logic gates
Detailed Academic Explanation:
Hundred logic gates is the correct answer to “Medium scale integration has . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 25 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Which has high input resistance?
Correct Answer: Option B — CMOS
Detailed Academic Explanation:
CMOS is the correct answer to “Which has high input resistance”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 26 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Transit time can be given by
Correct Answer: Option A — $$\frac{L}{v}$$
Detailed Academic Explanation:
$$\frac{L}{v}$$ is the correct answer to “Transit time can be given by”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 27 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
SIlicon-di-oxide is a good insulator.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “SIlicon-di-oxide is a good insulator.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 28 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Gate minimization technique is used to simplify the logic.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “Gate minimization technique is used to simplify the logic.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
Open, Closed is the correct answer to “Enhancement mode device acts as . . . . . . . . . switch, depletion mode acts as . . . . . . . . switch.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 30 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
BiCMOS has lower standby leakage current.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “BiCMOS has lower standby leakage current.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 31 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Silicon oxide is patterned on a substrate using . . . . . . . .
Correct Answer: Option B — Photolithography
Detailed Academic Explanation:
Photolithography is the correct answer to “Silicon oxide is patterned on a substrate using . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 32 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Which of the following is the drawback of the BiCMOS circuits?
Correct Answer: Option C — Increased fabrication Complexity
Detailed Academic Explanation:
Increased fabrication Complexity is the correct answer to “Which of the following is the drawback of the BiCMOS circuits”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 33 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In MOS transistors . . . . . . . . . is used for their gate.
Correct Answer: Option C — Polysilicon
Detailed Academic Explanation:
Polysilicon is the correct answer to “In MOS transistors . . . . . . . . . is used for their gate.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 34 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Overheating in device occurs due to less number of resistors per unit area.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “Overheating in device occurs due to less number of resistors per unit area.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 35 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
An inverter driven through one or more pass transistors has $$\frac{{Zp.u}}{{Zp.d}}$$ ratio of . . . . . . . .
Correct Answer: Option D — $$\frac{8}{1}$$
Detailed Academic Explanation:
$$\frac{8}{1}$$ is the correct answer to “An inverter driven through one or more pass transistors has $$\frac{{Zp.u}}{{Zp.d}}$$ ratio of . . . . . . . .”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 36 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
BiCMOS has low power dissipation.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “BiCMOS has low power dissipation.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 37 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
If n-transistor conducts and has large voltage between source and drain, then it is said to be in . . . . . . . . region.
Correct Answer: Option B — Saturation
Detailed Academic Explanation:
Saturation is the correct answer to “If n-transistor conducts and has large voltage between source and drain, then it is said to be in . . . . . . . . region.”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 38 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What are the features of BiCMOS?
Correct Answer: Option A — Low input impedance
Detailed Academic Explanation:
Low input impedance is the correct answer to “What are the features of BiCMOS”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 39 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
When the channel pinches off?
Correct Answer: Option C — Vds > (Vgs - Vth)
Detailed Academic Explanation:
Vds > (Vgs - Vth) is the correct answer to “When the channel pinches off”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
Question 40 of 40
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What kind of substrate is provided above the barrier to dopants?
Correct Answer: Option A — Insulating
Detailed Academic Explanation:
Insulating is the correct answer to “What kind of substrate is provided above the barrier to dopants”. This question is standard in competitive examination syllabi for Vlsi Design And Testing.
💡Key Conceptual Anchor:Vlsi Design And Testing
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Analog Electronics — Part 1
Master the next curriculum module with 40 exam-standard MCQs.
💡Examiner's Advisory for Electronics & Communications Engineering
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.