arrow
arrow
arrow
By doubling the diameter of a tubewell from 10 cm to 20 cm, the yield of the well will increase by:
Question

By doubling the diameter of a tubewell from 10 cm to 20 cm, the yield of the well will increase by:

A.

10%

B.

20%

C.

30%

D.

40%

Correct option is D

Doubling the well diameter significantly reduces water velocity inside the well, decreasing friction losses and increasing well yield by approximately 40%.

Free Tests

Free
Must Attempt

IBPS SO Prelims 2026 Full Mock Test 01 (New Pattern)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon125 Marks
  • timerIcon80 Mins
languageIcon English
Free
Must Attempt

IBPS SO Prelims 2026 English Subject Test-01

languageIcon English
  • pdpQsnIcon20 Questions
  • pdpsheetsIcon10 Marks
  • timerIcon15 Mins
languageIcon English
Free
Must Attempt

IBPS SO Prelims 2026 Quant Section Test-01

languageIcon English
  • pdpQsnIcon50 Questions
  • pdpsheetsIcon50 Marks
  • timerIcon40 Mins
languageIcon English
test-prime-package

Access ‘BIHAR BAO AND SDAO’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
446k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow