27) Water flowing in x direction has a rate of J w = 3yz liters/minute/m 2 . The total flow or flux of water through the rectangular area with corners (0,0,0), (0,3,0), (0,0,2) and (0,3,2) m is 1. 18 liters/minute [Option ID = 2937] 2. 27 liters/minute [Option ID = 2938] 3. 13 liters/minute [Option ID = 2939] 4. 36 liters/minute [Option ID = 2940] Answer: B Flux is given as: φ = ∬ S B · dS given : B̅ x = 3yz in x direction ds = dy dz a x φ = ∫( 0 to 2) ∫( 0 to 3) 3yz dy dz = 3 × 9 2 × 4 2 = 27 correct option is 2. Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials → ...

  26.  Vector A̅ = ŷ.3 + ẑ.2 and B̅ = x̂.5 + ŷ.8 extend from the origin. Find A̅.B̅ 1. 15 2.16 3.24 4.6 Answer: C solution Dot product A̅.B̅ = |A̅||B̅|cos(theta) and x̂.x̂ = 1, x̂.ŷ = x̂.ẑ = 0 and so on So, A̅.B̅ = 24 Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials →

25) For parallel polarisation, for lossless dielectrics, the expression for Brewster angle for a wave traveling from medium 1 to the medium of refractive indices η 1 and η 2 respectively is 1. θ = sin -1 √ [ (ε 1 /ε 2 ) / (1 + √(ε 1 /ε 2 )) ] [Option ID = 2929] 2. θ = sin -1 √ [ (ε 2 /ε 1 ) / (1 + ε 2 /ε 1 ) ] [Option ID = 2930] 3. θ = sin -1 √ [ ε 2 /ε 1 ] [Option ID = 2931] 4. θ = cos -1 √ [ ε 1 /ε 2 ] [Option ID = 2932] Answer: B Solution To find the expression for the Brewster angle (θ B ) for parallel polarization, follow these steps: Step 1: Understand the Condition for Brewster's Angle Brewster's angle occurs when the reflection coefficient for parallel polarization (p-polarization) is zero. For lossless dielectrics, this happens when the reflected ray and the refracted (transmitted) ray are perpendicular...

24) Which is lowest priority interrupt of 8086 microprocessor? 1. INTR [Option ID = 2925] 2. NMI [Option ID = 2926] 3. INT n [Option ID = 2927] 4. SINGLE-STEP [Option ID = 2928] Answer: A Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials →

23) The three basic structure types used to write the algorithm for a program are sequence, selection and repetition. Which of the following is NOT an advantage of using only these structures when writing the algorithm for a program? 1. Algorithm is easy to debug. [Option ID = 2921] 2. Algorithm is easy to understand. [Option ID = 2922] 3. Algorithm has very low space complexity. [Option ID = 2923] 4. Algorithm is easy to implement. [Option ID = 2924] Answer: B Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials →

   22) If the data segment register (DS) contains 4000H, what physical address will the instruction MOV, AL, [234BH] read? 1. 634BH 2. 3. 4. 4234BH Answer: D Solution Solution Here's how to calculate the physical address: DS (Data Segment Register): 4000H Offset: 234BH The physical address is calculated using the formula: Physical Address = (DS X 16) + Offset Convert DS to decimal and multiply by 16: 4000H in decimal is 16384. 16384 * 16 = 262144. Convert the result back to hexadecimal: 262144 in hexadecimal is 40000H. Add the offset: 40000H + 234BH = 4234BH Therefore, the physical address is 4234BH. So the answer is 4) 4234BH. Previous yr Question papers with Full Explanations → ...

  19.  Determine the output of the logic array given in the following figure. The Xs represent connected link 1. AB - + A - B 4. AB + A - B - Answer: A Solution AB + AB -    + A - B  +   A - B -  =   AB -    + A - B + 1 =  AB -    + A - B   Previous yr Question papers with Full Explanations → Electronics and Communiaction Study Materials →

18) The simplified boolean expression for the following K-map to find F(A,B,C,D) in SOP: AB \ CD 00 01 11 10 00 0 0 1 0 01 1 1 1 1 11 0 1 1 1 10 0 1 0 0 BD + A B D + A CD + AC D + ABD [Option ID = 2901] BD + A B D + A C D + AC D [Option ID = 2902] A B D + A C D + AC D + ABD [Option ID = 2903] A B C + A CD + A C D ...