Q. The correct statement pertaining to the friction welding process is (A) Heat affected zone is not formed (B) Flashes are not produced (C) Dissimilar materials cannot be joined (D) Melting of the base material(s) is not involved Ans: Melting of the base material(s) is not involved
The correct statement pertaining to the friction welding process is Read More »
Q. The process used for producing continuous insulation coating on an electrical wire is (A) Extrusion (B) Injection molding (C) Blow molding (D) Deep drawing Ans: Extrusion
The process used for producing continuous insulation coating on an electrical wire is Read More »
Q. The link lengths of a planar four bar mechanism are AB = 100 mm, BC = 25 mm, CD = 75 mm and DA = 90 mm. For achieving the full rotation of both the input (crank) as well as the output (follower) links, the link that needs to be fixed is Ans: BC
Q. Match the crystal structure in Column A with the corresponding packing fractions in Column B of the table Column A Column B 1 Simple cubic P 0.74 2 Hexagonal close-packed Q 0.68 3 Body-centered cubic R 0.52 4 Face-centered cubic (A) 1-P, 2-R, 3-Q, 4-Q (B) 1-R, 2-P, 3-R, 4-Q (C) 1-R, 2-P,
Q. The vector that is normal to the surface 2x z2 – 3x y – 4 x = 7 at the point (1, –1, 2) is (A) 2i – 3j + 8k (B) 2i + 3j + 4k (C) 7i – 3j + 8k (D) 7i – 5j + 8k Ans: 7i – 3j +
Q. For any real, square and non-singular matrix B , the det B-1 is (A) zero (B) (det B)-1 (C) -(det B) (D) det B Ans: (det B)-1 Sol: For any matrix whose inverse exists i.e. non-singular BB-1 = I |BB-1| = 1 |B||B-1| = 1 det (B-1) = (det B)-1
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Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? Option 1 : PseudomonasOption 2 : MycoplasmaOption 3 : NostocOption 4 : Bacillus
(a) Tharman Shanmugaratnam(b) Ng Kok Song(c) Tan Kin Lian(d) Lee Hsien Loong Ans.(a)Sol. Tharman Shanmugaratnam secured a substantial majority in Singapore’s presidential election, marking the country’s first contested presidential polls since 2011.
Which one of the following statements is not valid for aerosols? Option 1 : They are harmful to human health.Option 2 : They have negative impact on agricultural landOption 3 : They alter rainfall and monsoon patterns.Option 4 : They cause increased agricultural productivity.
Which one of the following statements is not valid for aerosols? Read More »
