1. The figure below shows a symbolic representation of the surface texture in a perpendicular lay orientation with indicative values (I through VI) marking the various specifications whose definitions are listed below. P: Maximum Waviness Height (mm); Q: Maximum Roughness Height (mm); R: Minimum Roughness Height (mm); S: Maximum Waviness Width (mm); T: Maximum Roughness Width (mm); U: Roughness Width (mm): II III - IV ORUM VI (A) I-Q, II-U, III-R, IV-T, V-S, VI-P The correct match between the specifications and the symbols (I to VI) is: (B) I-R, II-P, III-U, IV-S, V-T, VI-Q (C) I-U, II-S, III-Q, IV-T, V-R, VI-P (D) I-R, II-Q, III-P, IV-S, V-U, VI-T 2. Two plates, each of 6 mm thickness, are to be butt-welded. Consider the following processes and select the correct sequence in increasing order of size of the heat affected zone. 1. Arc welding 2. MIG welding 3. Laser beam welding 4. Submerged arc welding (A) 3-4-2-1 (B) 4-3-2-1 (C) 3-2-4-1 (D) 1-4-2-3 3. In the space above the mercury column in a barometer tube, the gauge pressure of the vapour is (A) positive, but more than one atmosphere (B) zero (C) positive, but less than one atmosphere (D) negative 4. -4 A matrix P is decomposed into its symmetric part S and skew symmetric part V. If S = 4 4 2 7/2 +37 72 2 2 7/2 0 -2 3 V = 2 7/2 then matrix P is -3 -7/2 0 -4 2 5 (A) 6 3 7 -1 02 (C) 4 -6 1 -2-3 12 -5-7-2 -2 9/2 -1 (B) -1 81/4 11 -2 45/2 73/4) -4 6 -1 (D) 2 3 0 5 7 2