Description : Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter A. Less than 0.01 mm B. Less than 0.05 mm C. Less than 0.1 mm D. Greater than 0.1 mm
Last Answer : ANS: D
Description : The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is A. Vs = 418 (Gs – Gw) d [(3T + 70)/100] B. Vs = 418 (Gs – Gw)d² [(3T + 70)/100] C. Vs = 218 (Gs – Gw)d² [(3T + 70)/100] D. Vs = 218 (Gs – Gw)d [(3T + 70)/100]
Last Answer : ANS: B
Description : A loudspeaker cabinet has an internal volume of 5,184 in3 (84,950 cm3 ). It has a port area on the baffle of 50 in2 (322.58cm2 ) and a thickness of 0.70 in (18 mm). What is the Helmholtz resonance, in hertz, of this loudspeaker enclosure? A. 250 Hz B. 245 Hz C. 240 Hz D. 255 Hz
Last Answer : C. 240 Hz
Description : What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? (A) 0.5 (B) 1.0 (C) 2.76 (D) 0.66
Last Answer : (D) 0.66
Description : An adult human with average health has systolic and diastolic pressures as (a) 120 mm Hg and 80 mm Hg (b) 50 mm Hg and 80 mm Hg (c) 80 mm Hg and 80 mm Hg (d) 70 mm Hg and 120 mm Hg.
Last Answer : (a) 120 mm Hg and 80 mm Hg
Description : The respective storm totals at three surrounding stations A, B and C are 110, 90 and 70 mm. If the normal annual precipitation amounts at stations X, A, B and C are respectively 1000, 1100, 1200 and 1250 mm, the estimated storm precipitation at X is (A) 75 mm (B) 77 mm (C) 79 mm
Last Answer : Answer: Option B
Description : For the construction of cement concrete dams, the maximum permissible size of the aggregates, is (A) 40 mm (B) 50 mm (C) 60 mm (D) 70 mm
Last Answer : Answer: Option A
Description : For testing compressive strength of cement, the size of cube used is (A) 50 mm (B) 70.6 mm (C) 100 mm (D) 150 mm
Last Answer : B
Description : Compute the maximum shearing stress developed in a phosphor bronze spring having mean diameter of 200 mm and consisting of 24 turns of 20-mm diameter wire when the spring is stretched 100 mm. and G = 42 GPa. a. 51 MPa b. 31.89 MPa c. 80 MPa d. 70 MPa
Last Answer : b. 31.89 MPa
Description : A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is 1o. The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of ... shaft is _______. (a) 43 to 45 (b) 50to 60 (c) 70 to 80 (d) 85 to 100
Last Answer : (a) 43 to 45
Description : The minimum and maximum clearances of check rails at all BG level crossings shall be a) 51 to 57 mm* b) 44 to 48 mm c) 41 to 45 mm d) 55 to 70 mm
Last Answer : a) 51 to 57 mm*
Description : What is the width of Head of 52 kg Rail section a. 70 mm b. 75 mm c. 67 mm* d. 60 mm
Last Answer : c. 67 mm*
Description : What is half of 1 converted into a decimal?
Last Answer : It is 0.5
Description : What are the numbers in the smallest group of repeating digits when 4111 is converted to a nonterminating decimal?
Last Answer : 4111 is an integer and so there is no sensible way to convert itinto a repeating decimal.
Description : When was the currency system in India converted into decimal system? A. April 1 1959 B. April 1 1957 C. April 1 1955 D. April 1 1953
Last Answer : B. April 1 1957 Explanation: The Indian currency system was converted into decimal system by Indian Coinage (Amendment) Act 1955 which brought into force from April 1, 1957.
Description : An scan be easily converted to its decimal equivalent by multiplying each octal digit by positional weight: a. Binary number b. Octal number c. Hexadecimal number d. Decimal number
Last Answer : b. Octal number
Description : What is the decimal form of 70 thousandths?
Last Answer : 0.07
Description : Convert decimal 70 to octal. 89) A) 1108 B) 1028 C) 768 D) 1068
Last Answer : D) 1068
Description : The hexadecimal equivalent of decimal 60 is ________. 70) A) 3C16 B) 3D16 C) 4D16 D) 5C16
Last Answer : A) 3C16