ব্যাখ্যা: উত্তর সহ কয়েকটি অনুরূপ গুরুত্বপূর্ণ প্রশ্ন 1. A hydraulic jump is generally formed when a stream moving with - A hyper-critical velocity meets a stream moving with a sub-critical velocity 2. Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less - Fallow land 3. The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to 45 4. A fall which maintains its depth, is - A trapezoidal notch fall, A low weir fall, A rectangular notch fall 5. A current meter measures the velocity of flow, if it is held-At any point within the cross-section

ব্যাখ্যা: Explained: The diameter of vicat plunger is 10 mm and the length of vicant plunger is vicate apparatus vaies form 40 to 50 mm. উত্তর সহ কয়েকটি অনুরূপ গুরুত্বপূর্ণ প্রশ্ন 1. The diameter of the Vicat plunger is 10 mm and its length varies from-40 mm to 50 mm 2. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to -10 kg 3. Gypsum is added for Controlling setting time 4. Modulus of elasticity of steel as per IS: 4561978 shall be taken as-200 kN/mm² 5. The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is -250 kg/cm2 6. The cement becomes useless if its absorbed moisture content exceeds-5%