Reading Mode - Questions

Electronics Engineering QUESTION #11703

Question 1901

The Harvard architecture used in many microcontrollers differs from Von Neumann architecture primarily in that:

It uses only 8-bit data buses
Program memory and data memory have separate buses allowing simultaneous fetch and execute✔️
It does not support interrupts
It uses RISC instruction sets exclusively

Correct Answer Logic:

Harvard architecture uses physically separate memory spaces and buses for instructions (program) and data. This allows the CPU to fetch the next instruction while simultaneously reading/writing data memory — a key performance advantage. Von Neumann uses a shared bus, creating the 'Von Neumann bottleneck.' AVR, PIC, and ARM MCUs use modified Harvard architecture.

Uploaded by: Fani Warraich

Mathematics QUESTION #6936

Question 1902

Find the count of natural numbers less than $7000$ that can be formed using the digits $0, 1, 3, 7, 9$ with repetition allowed.

374✔️
372
375
250

Correct Answer Logic:

1-digit: $1, 3, 7, 9$ (excluding 0) $= 4$

2-digit: First digit: 4 choices (1,3,7,9); second: 5 choices $= 4 \times 5 = 20$

3-digit: First digit: 4 choices; others: 5 each $= 4 \times 5 \times 5 = 100$

4-digit $< 7000$: First digit must be $1$ or $3$ (2 choices, since 7000 and above excluded — first digit can be 1, 3 only for $< 7000$; digits 7 and 9 give $\geq 7000$): $2 \times 5 \times 5 \times 5 = 250$

Total $= 4 + 20 + 100 + 250 = \mathbf{374}$

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #2433

Question 1903

For internal forced convection in a fully developed turbulent pipe flow (Dittus-Boelter equation), the Nusselt number is:

$Nu_D = 0.332 Re_D^{0.8} Pr^{0.4}$
$Nu_D = 0.023 Re_D^{0.8} Pr^n$ where $n=0.4$ for heating and $n=0.3$ for cooling✔️
$Nu_D = 3.66$ (constant, for laminar flow)
$Nu_D = 0.664 Re_D^{1/2} Pr^{1/3}$

Correct Answer Logic:

The Dittus-Boelter equation for turbulent pipe flow: $Nu_D=0.023Re_D^{0.8}Pr^n$ with $n=0.4$ for heating and $n=0.3$ for cooling.

Uploaded by: Fani Warraich

Agronomy QUESTION #2025

Question 1904

The method of fertilizer application that places nutrients in a band 5–7 cm to the side and below the seed is called:

Broadcasting
Side dressing
Starter band placement (2×2 placement)✔️
Foliar application

Correct Answer Logic:

Band placement (2×2 placement) positions fertilizer 5 cm to the side and 5 cm below the seed. This avoids salt injury to germinating seeds while placing nutrients close to emerging roots for early uptake, improving P efficiency particularly in cold, calcareous soils.

Uploaded by: Fani Warraich

Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5772

Question 1905

Captopril lowers blood pressure by inhibiting the conversion of:

Angiotensin II to I
Angiotensin I to II✔️
Bradykinin to inactive metabolites
Renin to Angiotensinogen

Correct Answer Logic:

ACE inhibitors block the conversion to the potent vasoconstrictor Angiotensin II.

Uploaded by: Fani Warraich

CISA QUESTION #1720

Question 1906

Regarding the key roles involved in an audit engagement, which of the following statements correctly defines the relationship between the auditor, the client, and the auditee?

The auditee conducts the audit while the client is the entity being examined.
The auditor performs the audit, and the client is the subject being audited.
The client defines the audit scope, and the auditor executes the work accordingly.✔️
The client funds the audit, and the auditor independently determines the scope.

Correct Answer Logic:

In an audit engagement, the client is the party who commissions the audit, sets the scope, grants authority, and arranges access. The auditee is the organisation, system, or process being examined — the target of the audit. The auditor designs and executes the audit plan in conformance with the client's scope and applicable audit standards. These three roles are distinct and must not be confused.

Uploaded by: Fani Warraich

Electronics Engineering QUESTION #11701

Question 1907

In an ARM Cortex-M4 microcontroller, the NVIC (Nested Vectored Interrupt Controller) assigns a lower priority number to an interrupt. This means:

The interrupt is serviced last (lowest priority)
The interrupt has higher priority and can preempt higher-numbered priorities✔️
The interrupt is disabled
The interrupt has no preemption capability

Correct Answer Logic:

In ARM Cortex-M NVIC, lower priority numbers indicate higher urgency. Priority 0 is the highest possible priority. A lower-numbered interrupt can preempt (interrupt) a currently executing higher-numbered (lower-urgency) ISR. This counter-intuitive naming is important for real-time embedded system design.

Uploaded by: Fani Warraich

Biology Zoology Botany QUESTION #1342

Question 1908

Sympathetic and parasympathetic limbs of the Autonomic Nervous System that mostly work opposite to each other are responsible for regulating body homeostasis by:

Involuntary internal process✔️
Involuntary external process
Voluntary internal process
None of these

Correct Answer Logic:

The Autonomic Nervous System (ANS) regulates involuntary internal processes such as heart rate, digestion, glandular secretions, smooth muscle activity, and respiration. The sympathetic division prepares the body for 'fight or flight' and the parasympathetic for 'rest and digest' — both acting automatically without conscious control on internal organs.

Uploaded by: Fani Warraich

MCQs Section QUESTION #5094

Question 1909

زیق میں پڑنا سے مراد ہے

عداوت رکھنا
لالچ میں آنا✔️
وقت میں پڑنا
ان میں سے کوئی نہیں

Correct Answer Logic:

زیق میں پڑنا محاورہ ہے جس کا مطلب ہے لالچ میں آنا یا فریب کھانا۔

Uploaded by: Fani Warraich

HR and Management QUESTION #6458

Question 1910

When organizations ask HR managers for assistance in 'matching the distinctive competencies of the firm's human resources to the mission of the organization,' this represents:

Operational HR management
Strategic HR management✔️
Tactical HR planning
Administrative HR compliance

Correct Answer Logic:

This represents strategic HR management - aligning human resources (their distinctive competencies) with organizational strategy (mission). It moves HR from purely operational/administrative functions to strategic business partner role.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8954

Question 1911

When the stock market is rising, it is called a:

Bearish market
Bullish market✔️
Crash
None of above

Correct Answer Logic:

A rising market is called a bull market.

Uploaded by: Fani Warraich

General Ability and Fire Fighting QUESTION #5628

Question 1912

The 'ignition temperature' of a fuel refers to:

The temperature at which the fuel melts
The temperature at which the fuel spontaneously combusts or can be ignited✔️
The boiling point of the fuel
The temperature of a fully developed fire

Correct Answer Logic:

Ignition temperature is the minimum temperature at which a fuel can be ignited and sustain combustion. Cooling a fuel below this point is the goal of the 'Cooling' extinguishment method.

Uploaded by: Fani Warraich

Islamic Studies QUESTION #8199

Question 1913

For how many years did the Caliphate of Hazrat Abu Bakr (RA) last?

Two yeas✔️
Thee yeas
Four years
Five years

Correct Answer Logic:

The caliphate of Hazrat Abu Bakr (RA) lasted approximately 2 years and 3 months (632-634 CE / 11-13 AH). During this brief period, he accomplished tremendous achievements: compiled the Quran in one volume, suppressed false prophets and apostasy (Ridda Wars), sent expeditions to Syria and Iraq, and established the foundations of Islamic governance. He died at age 63 and nominated Hazrat Umar (RA) as his successor.

Uploaded by: Fani Warraich

Physics QUESTION #7024

Question 1914

The central maximum in a single slit diffraction has an angular width of $60^\circ$ for a slit $1 \ \mu\text{m}$ wide. If two such slits are used in a YDSE setup with a screen $50 \text{ cm}$ away and a fringe width of $1 \text{ cm}$ is observed, what is the separation between the slits?

$75 \ \mu\text{m}$
$100 \ \mu\text{m}$
$25 \ \mu\text{m}$✔️
$50 \ \mu\text{m}$

Correct Answer Logic:

Angular width $2\theta = \frac{2\lambda}{a} = 60^\circ = \frac{\pi}{3} \text{ rad}$.

$\frac{\lambda}{a} = \frac{\pi}{6} \implies \lambda = \frac{\pi}{6} \times 1 \ \mu\text{m}$.

Fringe width $\beta = \frac{\lambda D}{d} = 1 \text{ cm} = 10^{-2} \text{ m}$.

$d = \frac{\lambda D}{\beta} = \frac{(\pi/6 \times 10^{-6}) \times 0.5}{0.01} \approx 26.1 \ \mu\text{m}$. The closest option is $25 \ \mu\text{m}$.

Uploaded by: Fani Warraich

Administration QUESTION #2938

Question 1915

Which of the following best describes the concept of "Organizational Culture"?

The formal written rules and employee handbooks
Shared values, beliefs, and norms that influence employee behavior✔️
The physical layout and architecture of the office building
None of these

Correct Answer Logic:

Culture represents the "unwritten rules" and shared mindset that dictate how members of an organization interact and work.

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #2513

Question 1916

The Soderberg criterion for fatigue is more conservative than the modified Goodman criterion because it uses which strength in place of $S_{ut}$?

Endurance limit $S_e$
Proof strength $S_p$
Yield strength $S_y$✔️
Fracture strength $S_f$

Correct Answer Logic:

The Soderberg criterion: $\frac{\sigma_a}{S_e}+\frac{\sigma_m}{S_y}=\frac{1}{n}$. It substitutes yield strength $S_y$ for ultimate strength $S_{ut}$. Since $S_y < S_{ut}$, the Soderberg line falls inside the Goodman line, making it more conservative.

Uploaded by: Fani Warraich

Mathematics QUESTION #4101

Question 1917

The Maclaurin series for $f(Z)=Z^2e^{3Z}$, using $e^{3Z}=\displaystyle\sum_{n=0}^{\infty}\dfrac{3^nZ^n}{n!}$, begins as:

$Z^2+3Z^3+\dfrac{9}{2}Z^4+\cdots$✔️
$Z^2+3Z^3+\dfrac{9}{2}Z^4+\dfrac{9}{2}Z^5+\cdots$
$1+3Z+\dfrac{9Z^2}{2}+\cdots$
$Z^2+Z^3+Z^4+\cdots$

Correct Answer Logic:

$Z^2e^{3Z}=Z^2\sum_{n=0}^\infty\dfrac{3^nZ^n}{n!}=Z^2+3Z^3+\dfrac{3^2}{2!}Z^4+\dfrac{3^3}{3!}Z^5+\cdots = Z^2+3Z^3+\dfrac{9}{2}Z^4+\dfrac{9}{2}Z^5+\cdots$.

Uploaded by: Fani Warraich

Geology QUESTION #10671

Question 1918

The attitude (orientation) of a rock bed can be correctly measured in the field by:

Measuring strike and dip direction with a compass and dip angle with a clinometer✔️
Reading only the magnetic needle position on the outer compass circle
Reading only the dip angle with a clinometer
Measuring only the strike direction by compass and dip by clinometer

Correct Answer Logic:

Complete bed attitude requires both strike (azimuth of a horizontal line on the bed surface, measured by compass) and dip (maximum angle of inclination below horizontal, measured by clinometer in the dip direction perpendicular to strike). The standard field notation is: Strike/Dip (e.g. N30°E/45°SE). Neither measurement alone defines the full three-dimensional orientation of the bed.

Uploaded by: Fani Warraich