ANS:D - No improvement

No answer description is available. 

ANS:B - False

No answer description is available. Let's discuss.

ANS:C - 20 m and 30 m length

These are the standard size which can be handle in field. 100 m is too long while 10 m is too short which will increase the cumulative error. 1. Revenue chain: 33 ft.
2. Gunter's chain: 66 ft.
3. Engineer's chain: 100 ft.
4. Metric chain: 20 m.

ANS:B - 375∠ - 70° Ω

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ANS:E - None of the above

No answer description is available.

ANS:C - viscous forces control and inertial forces are unimportant.

At low Reynolds numbers, viscous forces control the flow, and inertial forces are unimportant. Here’s an explanation:

• Reynolds Number (Re): The Reynolds number is a dimensionless quantity that characterizes the relative importance of inertial forces to viscous forces in fluid flow. It is defined as: Re=ρVLμRe = \frac{\rho V L}{\mu}Re=μρVL​ where:
  • ρ\rhoρ is the density of the fluid,
  • VVV is the characteristic velocity of the flow,
  • LLL is a characteristic length (such as the diameter of a pipe),
  • μ\muμ is the dynamic viscosity of the fluid.
• Low Reynolds Number: When the Reynolds number is low (typically Re<2000Re < 2000Re<2000), viscous forces dominate over inertial forces. This means that the viscosity of the fluid significantly affects the behavior of the flow, and the flow tends to be laminar with smooth and orderly fluid motion.
• Behavior at Low Reynolds Number: At low Reynolds numbers, the flow is characterized by layers of fluid moving smoothly and without significant mixing between layers. In this regime, viscous forces are responsible for resisting flow and controlling the movement of fluid particles.

ANS:A - Davos

The World Economic Forum (WEF) Annual Meeting, themed 'Rebuilding Trust,' will convene in Davos, Switzerland from January 15-19, with the presence of Indian leaders Smriti Irani, Ashwini Vaishnaw, and Hardeep Puri, engaging in discussions on climate change, conflicts, and misinformation.

ANS:A - Rajnath Singh

Defence Minister Rajnath Singh played a pivotal role by inaugurating India's first all-girl Sainik School in Vrindavan. He lauded the event as a "golden moment in the history of women empowerment," underscoring the significant strides taken in education and gender equality.

ANS:C - Second rank

India now holds the second rank in the MSCI EM Index, surpassing Taiwan. Over the past 8 years, India's weight in the index has increased from 7% to 17.1%, indicating economic resilience and attractiveness to investors. This rise in weightage has contributed to increased capital flows, with India experiencing the highest inflows in the last 11 years after a significant outflow in the preceding period.

ANS:A - 6.7%

India Ratings and Research (Ind-Ra) raised the GDP growth estimate for the current fiscal year to 6.7%, citing a robust economy, sustained government capital expenditure, and the potential for new private corporate capital expenditure. The revision reflects the agency's optimism despite acknowledged risks such as weak global growth, trade uncertainties, and volatile geopolitical situations.