481 . The metallic structure of mild steel is
  • A. body centred cubic
  • B. face centred cubic
  • C. hexagonal close packed
  • D. cubic structure
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More
প্রিমিয়াম প্ল্যান: ১ মাস
99 ৳
৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।
সাবস্ক্রিপশন লিংক

482 . In a circuit a 33 Q resistor carries a current of 2 A.. The voltage across the resistor is
  • A. 33 V
  • B. 66 V
  • C. 80 V
  • D. 132 V
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

483 . The weight of a body is due to
  • A. gravitational pull exerted by the earth
  • B. forces experienced by body in atmosphere
  • C. force of attraction experienced by particles
  • D. gravitational force of attraction towards the center of the earth.
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

484 . Kinematic viscosity is dependent upon
  • A. pressure
  • B. distance
  • C. flow
  • D. density
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

485 . The increase of temperature results in
  • A. increase in viscosity of gas
  • B. increase in viscosity of liquid
  • C. decrease in viscosity of gas
  • D. decrease in viscosity of liquid
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

486 . A pressure of 25 m of head of water is equal to
  • A. 25 kN/m2
  • B. 245 kN/m2
  • C. 2500 kN/m2
  • D. 2.5kN/m2
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

487 . The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by
  • A. TOD > BOD > COD
  • B. TOD > COD > BOD
  • C. BOD > COD > TOD
  • D. COD > BOD > TOD
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

488 . Alum as a coagulant is found to be most effective when pH range of water is
  • A. 2 to 4
  • B. 4 to 6
  • C. 6 to 8
  • D. 8 to 10
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

489 . The polluted water is one which
  • A. contains pathogenic bacteria
  • B. Consists of undesirable substances making it unfit for its best use i.e. drinking
  • C. is safe and suitable for drinking and domestic use
  • D. is contaminated
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

490 . The devices which are installed for drawing water from the sources are called
  • A. aquifers
  • B. aquiclude
  • C. filters
  • D. intakes
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

491 . If the average daily consumption of a city is 100,000 m3, the maximum daily consumption on peak hourly demand will be
  • A. 100000m3
  • B. 150000m3
  • C. 180000m3
  • D. 270000 m3
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

492 . The population of a city in the first three continuous years is given as 6000,8000 and 10000 respectively. What is the population of the city in the fourth continuous year, according to the geometric increase method?
  • A. 11500
  • B. 12000
  • C. 12870
  • D. 14000
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

493 . A 25 ml sample was diluted to 250ml with odourless distilled water so that the odour of the sample no longer perceivable. What was the Threshold odour number?
  • A. 11
  • B. 10
  • C. 25
  • D. 05
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

494 . Zero hardness of water is achieved by
  • A. Using lime soda process
  • B. Excess lime treatment
  • C. lon exchange method
  • D. Using excess alum dosage
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More

495 . Which out of the following does not help in disinfecting water?
  • A. Filtration
  • B. Chlorine Tablets
  • C. Alums
  • D. Boiling
View Answer
Favorite Question
Dhaka WASA Supply & Sewerage Authority (DWASA) || Assistant Engineer (02-03-2024) || 2024
More