Q. Which one of the following options contains ONLY primary air pollutants? (A) Hydrocarbons and nitrogen oxides (B) Hydrocarbons and ozone (C) Ozone and peroxyacetyl nitrate (D) Nitrogen oxides and peroxyacetyl nitrate Ans: Hydrocarbons and nitrogen oxides
Which one of the following options contains ONLY primary air pollutants? Read More »
Q. If the fineness modulus of a sample of fine aggregates is 4.3, the mean size of the particles in the sample is between (A) 150 mm and 300 mm (B) 300 mm and 600 mm (C) 1.18 mm and 2.36 mm (D) 2.36 mm and 4.75 mm Ans: 1.18 mm and 2.36 mm
Q. A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS:800- 2007) values, respectively, of effective length factor of the column are (A) 1.0 and 1.0 (B) 1.2 and 1.0 (C) 1.2 and 1.2
Daily Quiz on Current Affairs 31 July 2023 is very important for Competitive Exams like SSC, Railway, RRB, Banking, IBPS, PSC, UPSC, etc. Our Gkseries team have composed these Current Affairs Quizzes from Newspapers like The Hindu and other competitive magazines.
Daily Quiz on Current Affairs by Gkseries – 31 July 2023 Read More »
Q. A closed thin-walled tube has thickness, 𝑡, mean enclosed area within the boundary of the centerline of tube’s thickness, 𝐴𝑚, and shear stress, 𝜏. Torsional moment of resistance, T, of the section would be (A) 0.5𝜏𝐴𝑚𝑡 (B) 𝜏𝐴𝑚𝑡 (C) 2𝜏𝐴𝑚𝑡 (D) 4𝜏𝐴𝑚𝑡 Ans: τt=T/2Am⇒T=2Amτt
Q. What is curl of the vector field 2𝑥2𝑦𝐢 + 5𝑧2𝐣 − 4𝑦𝑧𝐤 ? A. 6𝑧𝐢 + 4𝑥𝐣 − 2𝑥2𝐤 B. 6𝑧𝐢 − 8𝑥𝑦𝐣 + 2𝑥2𝑦𝐤 C. −14𝑧𝐢 + 6𝑦𝐣 + 2𝑥2𝐤 D. −14𝑧𝐢 − 2𝑥2𝐤 Ans: −14𝑧𝐢 − 2𝑥2𝐤 Solution:
What is curl of the vector field 2𝑥2𝑦𝐢 + 5𝑧2𝐣 − 4𝑦𝑧𝐤 ? Read More »
![Euclidean norm (length) of the vector [4 −2 −6]𝑇 is](https://www.gkseries.com/blog/wp-content/uploads/2023/07/Euclidean-norm-length-of-the-vector-4-−2-−6𝑇-is-1024x536.jpg)
Q. Euclidean norm (length) of the vector [4 −2 −6]𝑇 is A. √12 B. √24 C. √48 D. √56 Ans:
Euclidean norm (length) of the vector [4 −2 −6]𝑇 is Read More »
Current Affairs is the most important area in all competitive exams. But the difficulty level is very high. That’s why; many aspirants get confused, how to select Current Affairs for Preparation of Competitive Examination? In this Post, Daily Current Affairs 31 July 2023, we have tried to cover each and every point and also included all important facts from
31 July 2023 Current Affairs – The Day’s Top News | GKSERIES Read More »
Q. “Popular Hindi fiction, despite – or perhaps because of – its wide reach, often does not appear in our cinema. As ideals that viewers are meant to look up to rather than identify with, Hindi film protagonists usually read books of aspirational value: textbooks, English books, or high value literature.” Which one of the
Q. An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours. If initially the tank was empty and someone started the two
