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# BITS QUESTIONS PAPERS

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### BITS QUESTIONS PAPERS

1. 1. Birla Institute of Technology & Science, PHani Work-Integrated Learning Programmes Division Second Semester 2012-2013 Mid-Semester Test (EC-2 Regular) Course No. : ENGG ZClll Course Title : ELECTRICAL & ELECTRONICS TECHNOLOGY Nature of Exam : Closed Book Weightage : 35% No. of Pages = 2 Duration : 2 Hours No. of Questions = 5 Date of Exam : 10/02/2013 (AN) Note: I. Please follow all the Instructions to Candidates given on the cover page of the answer book. 2. All parts of a question should be answered consecutively. Each answer s~ould start from a fresh page. 3. Assumptions made if any, should be stated clearly at the beginning of your answer. r>.~ circuit consisting of three resistances 120, 180 and 360 respectively, joined in/,1. ;arallel, is connected in series with a fourth resistance. The whole is supplied at 60V and it is found that the power dissipated in 120 resistance is 36W. Determine the value of fourth resistance and total power dissipated in the group. [7] Q.2. Using Thevenins theorem to determine 10 in figure 1 shown below: [7] -lA I 3VC) i I 60 SO mr y:o ! Ny • Figure 1 Q.3. For the network shown in figure 2: (a) Determine the mathematical expressions for variation of the voltage across the capacitor and current through the capacitor as a function of time, following the closure of the switch at t=O on to position 1; (b) The switch is closed on to position 2 when t=IOOms: determine the new expressions for capacitor voltage and current as a function of time. [7] Rl I Z L ltl" 1 tWill c ~ Rl 200 ·n O pF .l I Figure 2 ENGG ZC111 (EC-2 Regular) Second Semester 2012-2013 Page 1 of2
2. 2. ENGG ZC111 (EC-2 Regular) Second Semester 2012-2013 Page 2QA . A coil having resistance of 4 n and a constant inductance of 2H is switched across 20Y d.c. su pply. Calculate (a) the time constant (b) the final value of current (c) the value of current 1.0s after the switch is closed. [7]Q.S . A capacitor of 8~F takes a current of lA when the alternating voltage applied across it is 230Y. Calculate: (a) The frequency of applied voltage (b) The resistance to be connected in series with the capacitor to reduce the current in circuit to O.SA at the same frequency (c) The phase angle of resulting circuit. [7] ******ENGG ZClll (EC-2 Regular) Second Semester 2012-2013 Page 2 of2
3. 3. Birla Institute of Technology & Science, Pilani Work-Integrated Learning Programmes Division Second Semester 2012-2013 Mid-Semester Test (EC-2 Regular)Course No. : MGTS ZC21 1Course Title : PRINCIPLES OF MANAGEMENTNature of Exam : Closed BookWeightage : 35% No. of Pages = 1Duration : 2 Hours No. of Questions = 5Date of Exam : 09/02/2013 (FN)Note:I. Please follow all the Instructions to Candidates given on the cover page of the answer book.2. All parts of a question should be answered consecutively. Each answer should start from a fresh page.3. Assumptions made ifany, should be stated clearly at the beginning of your answer.Q.l. How does a managers job change with hislher level in the organization? Explain considering functional, Mintzbergs role and skill approach to management [7]Q.2. Explain the contribution of Hawthorne studies to Management. How is human resource approach applied today? [7]Q.3. What are the methods by which an enterprise can enter other countries? [7]Q.4. List and discuss different types of giOwth corporate strategies. Include specific examples of companies that pursue each of these growth strategies [7]Q.5. What are the factors that determine ethical and unethical behaviour of an individual when faced with ethical dilemma? [7] **********
4. 4. Birla Institute of Technology & Science, PHani Work-Integrated Learning Programmes Division Second Semester 2012-2013 Mid-Semester 2012-2013 (EC-2 Regular) C01llse ~ame : lvlATH ZC161 Course Title : Engineering rvIathematics - I ~ at ur e of Exam: Closed Book Weightage : 35% D uratioll : 2 Hours No. of P ages = 01 Date of Exam : 09/ 02/ 2013 (AN ) No. of Questions = 05 ;;.;r ote: 1. P lease follow all the ILst ructions to Ca:ndidates given on the cover page of the answer book. 2. All parts of a question should be answered consecutively. Each answer should start from a fresh page. 3. Assump t ions made if allY, should be stated clearly at the beginning of your answer. 21)./ Q. 1. Suppose A = ( ~; . Show that the matrix B = AAT is symmetric. [6] / Q. 2. Solve the following system of equations by Cramer s rule = -4. [8],...- Q. 3. Find the eigenvalues and eigenvectors of the matrix A = (~ _~). [7]< Q. 4( a). Evaluate the following limit: . X2 + X - 2 1nn --,---- [4] x-+l :r2 - ;c dy x 2 + sin x (b). Find dx where y = x3 + cosx . [4] Q. 5. Evaluate the following integral: J x3 x+4 + 3x 2 - lO x dx. [6] ~, ~