Reading Mode - Questions

Electrical Engineering QUESTION #2159

A transformer rated 10 MVA, 33/11 kV has a per-unit impedance of $0.05\,\text{pu}$ on its own base. On a new system base of 100 MVA and 33 kV (HV side), the per-unit impedance becomes:

$0.5\,\text{pu}$✔️
$0.005\,\text{pu}$
$0.05\,\text{pu}$
$5\,\text{pu}$

Correct Answer Logic:

$Z_{pu,new} = Z_{pu,old} \times \frac{MVA_{base,new}}{MVA_{base,old}} \times \left(\frac{kV_{base,old}}{kV_{base,new}}\right)^2 = 0.05 \times \frac{100}{10} \times 1 = 0.5\,\text{pu}$.

Uploaded by: Fani Warraich

Ability / HR / Governance / Special Education QUESTION #5635

Question 5082

A Principal Accounting Officer (PAO) approves an expenditure that falls outside the scope of any Grant or Appropriation. It is neither covered by a Supplementary Grant nor a Technical Supplementary Grant. Under the System of Financial Control and Budgeting what is the legal status of such expenditure?

The expenditure is valid if approved by the Financial Adviser
The expenditure is treated as unauthorized✔️
The expenditure can be regularized by the PAO if within delegated powers
The expenditure is automatically absorbed in the next budget cycle

Correct Answer Logic:

Any expenditure in excess of the Grant or Appropriation amount or that falls outside its scope and intent is treated as unauthorized unless regularized by a Supplementary Grant or Technical Supplementary Grant.

Uploaded by: Fani Warraich

Social Studies QUESTION #10016

Question 5083

As per the WEF Global Gender Gap Report 2023, where was Pakistan ranked among 146 countries?

145
142✔️
140
None of these

Correct Answer Logic:

Pakistan was ranked 142nd out of 146 countries in the 2023 report.

Uploaded by: Fani Warraich

Ability / HR / Governance / Special Education QUESTION #1852

Question 5084

Who is the appointing authority for posts in BPS 17 to 19?

Prime Minister
Secretary of the Ministry or Division concerned✔️
An officer notified by the Secretary
Establishment Division

Correct Answer Logic:

Rule 6(1) Table entry (2) specifies the Secretary of the Ministry or Division concerned as appointing authority for posts in BPS 17 to 19.

Uploaded by: Fani Warraich

Dairy Food Science and Technology QUESTION #5950

Question 5085

Sweet cream buttermilk (byproduct of butter churning) differs from cultured buttermilk in that:

Sweet cream buttermilk has higher fat and more milk fat globule membrane (MFGM) material but no lactic acid flavor✔️
Sweet cream buttermilk contains more lactic acid and diacetyl
Cultured buttermilk has higher butterfat content
Sweet cream buttermilk has been pasteurized; cultured buttermilk has not

Correct Answer Logic:

Sweet cream buttermilk is rich in MFGM material (phospholipids, sphingomyelin), has mild flavor, low acidity, and low fat ($\approx 0.5\%$). Cultured buttermilk is produced by fermenting skim/low-fat milk with $Lc.\;lactis$ subsp. $cremoris$ and $Leuconostoc$ spp., producing lactic acid ($\approx 0.9\%$) and diacetyl.

Uploaded by: Fani Warraich

Agronomy QUESTION #2064

Question 5086

Zinc deficiency, the most widespread micronutrient deficiency in Pakistan and South Asia, is characterized by:

Dark green, crinkled older leaves with necrotic margins
Interveinal chlorosis and stunting of older leaves due to Zn mobility
Stunted young leaves, shortened internodes (little leaf/khaira disease in rice), interveinal chlorosis on young leaves, and delayed maturity — due to Zn's role in auxin synthesis and enzyme activation✔️
Pale yellow coloration of the entire plant with early senescence

Correct Answer Logic:

Zn deficiency causes little leaf/rosette in fruit trees, khaira disease in rice, and white bud in maize. Young leaves are affected first (Zn is relatively immobile in phloem). Zn activates >300 enzymes, is required for IAA synthesis, RNA polymerase, and ribosome structure. ZnSO₄ (21% Zn) applied at 25 kg/ha corrects deficiency.

Uploaded by: Fani Warraich

Physics QUESTION #7033

Question 5087

Determine the dimensional formula for the permittivity of a vacuum ($\epsilon_0$). Given the fundamental quantities: $M$ = mass, $L$ = length, $T$ = time, and $A$ = electric current.

$[\epsilon_0] = [M^{-1} L^{-3} T^2 A]$
$[\epsilon_0] = [M^{-1} L^{-3} T^4 A^2]$✔️
$[\epsilon_0] = [M^{-1} L^2 T^4 A^{-2}]$
$[\epsilon_0] = [M^{-1} L^2 T^{-1} A]$

Correct Answer Logic:

According to Coulomb's Law, the force $F$ between two charges $q_1$ and $q_2$ separated by distance $r$ is:

$F = \frac{1}{4\pi\epsilon_0} \frac{q_1 q_2}{r^2}$

Rearranging for permittivity:

$\epsilon_0 = \frac{q^2}{4\pi F r^2}$

Dimensional analysis:

Charge $[q] = [AT]$
Force $[F] = [MLT^{-2}]$
Distance $[r] = [L]$

$[\epsilon_0] = \frac{[A^2 T^2]}{[M L T^{-2}] [L^2]} = [M^{-1} L^{-3} T^4 A^2]$

Uploaded by: Fani Warraich

ETAG General Aptitude QUESTION #3766

Question 5088

Four landmarks H1, H2, H3, and H4 are located in a park. 1) H2 and H3 are not the easternmost. 2) H2 and H3 are not the westernmost. 3) The easternmost and westernmost are not the southernmost. 4) Two landmarks are west of H2. 5) The southernmost has at least two landmarks to its east. Which landmark is the southernmost?

H1✔️
H2
H3
H4

Correct Answer Logic:

Based on logical deduction of positions, H1 is the only landmark satisfying the condition of being the southernmost with at least two hills to its east.

Uploaded by: Fani Warraich

Mathematics QUESTION #6972

Question 5089

Let $I_n=\displaystyle\int\tan^n x\,dx$ for $n>1$. If $I_4+I_6 = a\tan^5x + bx^5 + C$, find the ordered pair $(a,b)$.

$\left(-\dfrac{1}{5},1\right)$
$\left(\dfrac{1}{5},0\right)$✔️
$\left(\dfrac{1}{5},-1\right)$
$\left(-\dfrac{1}{5},0\right)$

Correct Answer Logic:

Use the reduction: $I_n+I_{n-2}=\displaystyle\int\tan^{n-2}x\cdot\tan^2x\,dx+\int\tan^{n-2}x\,dx=\int\tan^{n-2}x\sec^2x\,dx=\dfrac{\tan^{n-1}x}{n-1}+C$

$I_4+I_6$: set $n=5$: $I_4+I_6=\dfrac{\tan^5x}{5}+C$

Comparing with $a\tan^5x+bx^5+C$: $a=\dfrac{1}{5}$, $b=0$.

$(a,b) = \left(\dfrac{1}{5},0\right)$

Uploaded by: Fani Warraich

Mathematics QUESTION #6949

Question 5090

Let $p = \displaystyle\lim_{x\to0^+}\left(1+\tan^2\sqrt{x}\right)^{\frac{1}{2x}}$. Find $\ln p$.

1
$\dfrac{1}{2}$✔️
$\dfrac{1}{4}$
2

Correct Answer Logic:

This is a $1^\infty$ indeterminate form. Take logarithm:

$\ln p = \lim_{x\to0^+}\dfrac{\ln(1+\tan^2\sqrt{x})}{2x}$

Let $t=\sqrt{x}$, so $x=t^2$, $x\to0^+$ means $t\to0^+$:

$= \lim_{t\to0^+}\dfrac{\ln(1+\tan^2 t)}{2t^2} = \lim_{t\to0^+}\dfrac{\tan^2 t}{2t^2} = \dfrac{1}{2}$

(using $\ln(1+u)\approx u$ for small $u$ and $\lim_{t\to0}\frac{\tan t}{t}=1$)

Uploaded by: Fani Warraich

Math Physics Chemistry Biology QUESTION #11300

Question 5091

Which of the following is the correct order of events in eukaryotic gene expression?

Transcription $\to$ RNA splicing $\to$ Translation $\to$ Protein folding✔️
Translation $\to$ Transcription $\to$ RNA splicing $\to$ Protein modification
Transcription $\to$ Translation $\to$ RNA splicing
RNA splicing $\to$ Transcription $\to$ Translation

Correct Answer Logic:

In eukaryotes, gene expression follows: transcription (DNA $\to$ pre-mRNA in nucleus) $\to$ RNA processing/splicing (removal of introns, addition of 5' cap and poly-A tail) $\to$ translation (mRNA $\to$ protein in cytoplasm) $\to$ protein folding and modification.

Uploaded by: Fani Warraich

MBBS QUESTION #10305

Question 5092

Glycogen, the primary storage form of glucose in liver and skeletal muscle, is a branched polysaccharide of glucose units linked predominantly by which glycosidic bonds, with branch points formed by a second bond type?

$\alpha$-1,4 linkages in the main chain, with $\alpha$-1,6 linkages at branch points✔️
$\beta$-1,4 linkages throughout, identical to cellulose
$\alpha$-1,2 linkages exclusively
$\beta$-1,6 linkages exclusively

Correct Answer Logic:

Glycogen's $\alpha$-1,4 glycosidic bonds form long linear glucose chains, while $\alpha$-1,6 branch points (introduced by the branching enzyme) create a highly branched structure that allows rapid, simultaneous glucose release from multiple chain ends during glycogenolysis.

Uploaded by: Fani Warraich

Social Studies QUESTION #10028

Question 5093

Which feminist perspective places central importance on women's personal lived experiences?

Liberal Feminism
Radical Feminism✔️
Socialist Feminism
Postmodern Feminism

Correct Answer Logic:

Radical feminism emphasizes personal experience, encapsulated in the phrase 'the personal is political'.

Uploaded by: Fani Warraich

Physics QUESTION #7844

Question 5094

Transformer works on principle of:

Coulomb's law
Electromagnetic induction✔️
Gas's law
Hess's law

Correct Answer Logic:

Mutual induction (Faraday's law).

Uploaded by: Fani Warraich

Math Physics Chemistry Biology QUESTION #11265

Question 5095

Antidiuretic hormone (ADH) acts primarily on the:

Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule and collecting duct✔️
Glomerulus

Correct Answer Logic:

ADH (vasopressin) increases water permeability in the distal convoluted tubule and collecting duct by inserting aquaporin-2 channels into the cell membranes. This promotes water reabsorption and concentrates urine.

Uploaded by: Fani Warraich

Physics QUESTION #4406

Question 5096

An incompressible fluid flows through a pipe that becomes narrower in one section. The fluid speed increases in that region to maintain:

Constant pressure
Constant energy
Constant mass flow rate✔️
Constant volume

Correct Answer Logic:

By the equation of continuity: $A_1v_1 = A_2v_2$. For an incompressible fluid, the volume flow rate (and hence mass flow rate) must remain constant. When area decreases, velocity increases to maintain $\dot{m} = \rho Av = $ constant.

Uploaded by: Fani Warraich

Maths QUESTION #2867

Question 5097

Which of the following is a prime number?

21
27
31✔️
33

Correct Answer Logic:

A prime number is only divisible by $1$ and itself. $31$ has no other factors.

Uploaded by: Fani Warraich

Maths QUESTION #2812

Question 5098

A population increased from 50,000 to 65,000. What is the percentage increase?

20%
25%
30%✔️
35%

Correct Answer Logic:

Increase $= 65000 - 50000 = 15000$. Percentage increase $= \dfrac{15000}{50000} \times 100 = 30\%$.

Uploaded by: Fani Warraich

Electrical Engineering QUESTION #2192

Question 5099

A DC shunt motor draws $I_L = 50\,\text{A}$ from $V = 220\,\text{V}$. Given $R_a = 0.4\,\Omega$ and $R_f = 110\,\Omega$, the back-EMF $E_b$ and mechanical power developed are:

$E_b \approx 200.8\,\text{V}$, $P_{mech} \approx 9{,}638\,\text{W}$✔️
$E_b = 220\,\text{V}$, $P_{mech} = 11{,}000\,\text{W}$
$E_b = 196\,\text{V}$, $P_{mech} = 9{,}800\,\text{W}$
$E_b = 218\,\text{V}$, $P_{mech} = 10{,}900\,\text{W}$

Correct Answer Logic:

$I_f = V/R_f = 220/110 = 2\,\text{A}$. $I_a = I_L - I_f = 48\,\text{A}$. $E_b = V - I_a R_a = 220 - 48\times0.4 = 200.8\,\text{V}$. $P_{mech} = E_b\times I_a = 200.8\times48 \approx 9{,}638\,\text{W}$.

Uploaded by: Fani Warraich

Education QUESTION #7596

Question 5100

In which teaching method are learners encouraged to reflect on their experiences to evaluate understanding and build deeper conceptual knowledge?

Perennialism
Constructivism✔️
Realism
None of these

Correct Answer Logic:

Constructivist teaching methods emphasize reflective practice, where students examine their experiences to build deeper understanding and construct new knowledge.

Uploaded by: Fani Warraich

More Options

Suggest a Question