Question 41. A material with grain size of ASTM No. 6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/m3/2 Grain size of the material is approximately

Question 42. A steel ball (density ρsteel = 7200 kg/m3) is placed in an upward moving liquid Al (density ρAl = 2360 kg/m3, viscosity μAl = 1 * 10“3 Pa.s and Reynolds number = 5 * 105). The force (F) exerted on the steel ball is expressed as F = f Ï€ R2(ρAl v2/2)where, f is friction factor (=0.2), v is the velocity of liquid Al and R is the radius of steel ball.The terminal velocity of a fine spherical steel particle having diameter dp, in μm range, if allowed
to fall in a quiescent liquid Al bath, is

Question 43. A material with grain size of ASTM No. 6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/m3/2 Yield strength of the material is approximately

Question 44. Choose the most appropriate word from the options given below to complete the following
sentence: Given the seriousness of the situation that he had to face, his ___ was impressive.

Question 45. Choose the most appropriate alternative from the options given below to complete the following
sentence: If the tired soldier wanted to lie down, he ___ the mattress out on the balcony.

Question 46. Which one of the following options is the closest in meaning to the word given below? Latitude

Question 47. If (1.001)1259 = 3.52 and (1.001)2062 = 7.85, then (1.001)3321 =

Question 48. Raju has 14 currency notes in his pocket consisting of only Rs. 20 notes and Rs. 10 notes. The total
money value of the notes is Rs. 230. The number of Rs. 10 notes that Raju has is

Question 49. One of the parts (A, B, C, D) in the sentence given below contains an ERROR. Which one of the
following is INCORRECT? I requested that he should be given the driving test today instead of tomorrow.

Question 50. There are eight bags of rice looking alike, seven of which have equal weight and one is slightly
heavier. The weighing balance is of unlimited capacity. Using this balance, the minimum number
of weighings required to identify the heavier bag is