Reading Mode - Questions

A 3-phase 6-pulse bridge rectifier produces ripple at 6 times the supply frequency. With 50 Hz supply, ripple = 300 Hz. This is because six rectifier pulses occur per supply cycle (one per 60°). Higher pulse numbers reduce ripple magnitude and frequency filtering requirements — 12-pulse rectifiers give 600 Hz ripple with even lower amplitude.

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Aptitude QUESTION #11040

Question 9206

If BUILDING is coded as 2-21-9-12-4-9-14-7, then ARCHITECT is coded as:

$1-18-3-8-9-20-5-3-20$✔️
$1-18-3-8-9-20-5-3-19$
$1-18-3-8-5-20-3-3-20$
$1-18-3-8-9-20-5-3-21$

Correct Answer Logic:

The code uses alphabetical positions: B=2, U=21, I=9, L=12, D=4, I=9, N=14, G=7. For ARCHITECT: A=1, R=18, C=3, H=8, I=9, T=20, E=5, C=3, T=20. So $1-18-3-8-9-20-5-3-20$.

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Pakistan Affairs QUESTION #315

Question 9207

What is the total cost of China-Pakistan Economic Corridor (CPEC)?

$72 Billion
$ 62 Billion✔️
$26 Billion
$ 32 Billion

Correct Answer Logic:

While the initial investment was $46 billion, it was later updated to approximately $62 billion.+1

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English QUESTION #8351

Question 9208

After the concert, everyone _______ and clapped.

Raised
rose✔️
Had Risen
Rising

Correct Answer Logic:

'Rose' (past of rise) means stood up.

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Chemistry QUESTION #7160

Question 9209

Among the following four consecutive members of the 3d transition series, which is predicted to have the highest standard electrode potential ($E_{M^{3+}/M^{2+}}^{0}$)?

$Cr (Z=24)$
$Mn (Z=25)$
$Fe (Z=26)$
$Co (Z=27)$✔️

Correct Answer Logic:

The $E^{0}$ value for $M^{3+}/M^{2+}$ measures the stability of the $+2$ state relative to the $+3$ state. Cobalt ($Co$) has a very high positive value ($+1.97\text{ V}$) because the $Co^{2+}$ ion is significantly more stable than the $Co^{3+}$ ion in simple compounds, making the reduction very favorable.

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Math Physics Chemistry Biology QUESTION #4184

Question 9210

When genes are linked, they tend to:

Segregate randomly
Cross over during meiosis
Stay together during inheritance✔️
Be inherited separately

Correct Answer Logic:

Linked genes are located on the same chromosome and tend to be inherited together.

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Reading and Writing (Module-1) QUESTION #5447

Question 9211

Ming Tang's 2019 study explains Earth's arcs, ridges that form when an oceanic plate subducts under a continental plate, melts, rises, and bursts through the ____

continents geological
continents: geological✔️
continents: geological
continents. Geological

Correct Answer Logic:

A colon introduces an appositive or clarification; here it separates "continental crust" from "geological structures" though the original text has no punctuation. Given options, colon is least incorrect.

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General Knowledge QUESTION #11559

Question 9212

The tangible, physical machinery of a computer system is called:

Software
Hardware✔️
Humanware
All of these

Correct Answer Logic:

Hardware refers to the physical, tangible components of a computer — CPU, RAM, motherboard, hard drive, keyboard, monitor, mouse, and other peripherals. This contrasts with software (intangible programs and data). Hardware is the physical infrastructure on which software runs.

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Civil Procedure QUESTION #3759

Question 9213

A person owns land that is completely surrounded by other people's land, with no access to a public road. They likely have:

An easement by necessity.✔️
An easement by implication.
A negative easement.
No right of access.

Correct Answer Logic:

An easement by necessity is created when a piece of land is landlocked and the only way to reach a public road is across the grantor's remaining land.

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The Constitution of Pakistan QUESTION #9396

Question 9214

Article 6(1) defines high treason to include which of the following acts that go beyond physical force?

Only armed insurrection
Abrogating, subverting, suspending or holding in abeyance the Constitution by use of force OR show of force OR by any other unconstitutional means✔️
Only acts of foreign-aided sabotage
Only suspension of the Constitution by military force

Correct Answer Logic:

Article 6(1), as substituted by the 18th Amendment, expanded the definition to cover not only 'use of force' but also 'show of force or by any other unconstitutional means.' This triple formulation — use of force, show of force, or any other unconstitutional means — closed previous loopholes that might have distinguished coercive tactics.

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Nursing QUESTION #9283

Question 9215

A patient with chronic renal failure (CRF) has serum potassium of 6.8 mEq/L. The nurse notes peaked T-waves on ECG. The priority nursing action is:

Administer sodium bicarbonate IV
Prepare for urgent dialysis
Administer calcium gluconate IV immediately and notify the physician✔️
Restrict dietary potassium intake

Correct Answer Logic:

Hyperkalemia (K⁺ > 6.5 mEq/L) with ECG changes (peaked T-waves, widened QRS) is a life-threatening emergency due to risk of fatal ventricular arrhythmias.

The immediate priority is cardiac membrane stabilization:

Calcium gluconate IV (IMMEDIATE) — stabilizes cardiac cell membrane within 1–3 minutes. Does NOT lower serum K⁺ but protects the heart.
Sodium bicarbonate IV — shifts K⁺ into cells (takes 15–30 min)
Insulin + Dextrose — shifts K⁺ intracellularly
Kayexalate (sodium polystyrene sulfonate) — removes K⁺ from body
Dialysis — definitive treatment in renal failure

Remember the mnemonic for hyperkalemia management: C-BIG-K-Drop (Calcium, Bicarbonate, Insulin+Glucose, Kayexalate, Dialysis).

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Therapeutics and Patient Care QUESTION #3876

Question 9216

For which of the following clinical conditions is the non-selective beta-blocker propranolol NOT an indicated therapy?

Oesophageal varices
Phaeochromocytoma
Hypothyroidism✔️
Migraine

Correct Answer Logic:

Propranolol has no role in hypothyroidism treatment. It is used in hyperthyroidism (thyrotoxicosis) to manage symptoms, but not in the hypothyroid state.

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English QUESTION #2766

Question 9217

Find the word SIMILAR IN MEANING to 'Melancholy'.

Joyful
Cheerful
Sorrowful✔️
Excited

Correct Answer Logic:

'Melancholy' means a feeling of pensive sadness. 'Sorrowful' means feeling or showing grief and sadness — the closest synonym. The other options (Joyful, Cheerful, Excited) are antonyms.

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Chemistry QUESTION #7193

Question 9218

In the estimation of nitrogen using the Dumas method, $0.3 \text{ g}$ of an organic compound yielded $50 \text{ mL}$ of nitrogen gas collected at $300 \text{ K}$ and $715 \text{ mm Hg}$ pressure. Determine the percentage of nitrogen in the compound. (Aqueous tension at $300 \text{ K} = 15 \text{ mm Hg}$)

15.46%
17.46%✔️
16.46%
18.46%

Correct Answer Logic:

First, calculate the volume of nitrogen at STP ($P_1V_1/T_1 = P_2V_2/T_2$):

$P_1 = 715 - 15 = 700 \text{ mm Hg}$ [cite: 3, 53]
$V_1 = 50 \text{ mL}$, $T_1 = 300 \text{ K}$ [cite: 18]
$V_{STP} = \frac{700 \times 50 \times 273}{300 \times 760} \approx 41.9 \text{ mL}$ [cite: 19]
Mass of $N_2 = \frac{28 \times 41.9}{22400} \approx 0.0524 \text{ g}$ [cite: 54]
$\% \text{ Nitrogen} = \frac{0.0524}{0.3} \times 100 \approx 17.46\%$ [cite: 56]

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