Elements of Civil Engineering - Dec 2013

First Year Engineering (Semester 2)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.

Objective Question

1(a)1 Which of the following scale is the largest one?
(A) 1 cm = 50 m
(B) 1:42000
(C) RF = 1/300000
(D) 1 cm = 50 km (1 marks) 1(a)2 Which of the following instrument can be used for setting out 45° on chain line?
(A) Cross-staff
(B) French cross-staff
(C) Prism square
(D) Optical square (1 marks) 1(a)3 Invar tape is made of an alloy of
(A) copper and steel
(B) brass and nickel
(C) brass and steel
(D) steel and nickel (1 marks) 1(a)4 The true bearing of a line is 124°. What is magnetic bearing, if declination is 2°30'E?
(A) 126°30'
(B) 120°30'
(C) 121°30'
(D) 122°30' (1 marks) 1(a)5 The area of irregular boundary can be obtained by
(A)Parallax bar
(B) Pentagraph
(C) Prism square
(D) Pl animete(1 marks) 1(a)6 Which one of the following is not a hydraulic structure?
(A)Dam
(B) Weir
(C) Soak pit
(D) Canal (1 marks) 1(a)7 Formula of Quick lime is
(A)CaCO₃ (B) Ca(OH)₂
(C) CO₃CO₂
(D) CaO (1 marks) 1(b)1 Property of fresh concrete is
(A)Workability
(B) Segregation
(C) Bleeding
(D) All of these (1 marks) 1(b)2 A 1stClass brick immersed in water for 24 hours, should not absorb water (byweight) more than
(A)10%
(B) 20%
(C) 15%
(D) 25% (1 marks) 1(b)3 Which is the part of substructure out of the follow ing?
(A)Plint
(B) Foundation
(C) PC
(D) Walls (1 marks) 1(b)4 Which one of the following is a Regulatory sign of traffic?
(A) Right hand curve
(B) No parking sign
(C) Parking sign
(D) Destination sign (1 marks) 1(b)5 The imaginary lines joining places of equal dip are called
(A)Agonic line
(B) Isogonic line
(C) Isoclinic line
(D) Contour (1 marks) 1(b)6 An metric chain, number of links per meter can be
(A)2
(B) 5
(C) 4
(D) 8 (1 marks) 1(b)7 Survey in which curvature of the earth surface is t aken into account is
(A)Plane survey
(B) Geological survey
(C) Geodetic sur vey
(D) Hydrographic survey (1 marks) 2(a) Explain role of civil engineer in infrastructure development(7 marks) 2(b) State and explain fundamental principles of survey. What are aims and applications of surveying? (7 marks) 3(a) Write a short note on reciprocal ranging. Also solve an example of a 20 m chain was tested and found 5 cm too short before the star t of work. After measuring a distance of 1200 m, it was found 8 cm too long. After measuring 850 m, the chain was found 12 cm too long during testing at the end of the day's work. Find the true distance measured during the day. (7 marks) 3(b) Describe applications of remote sensing and contour maps. Explain the following terms related to compass survey.
(1)Magnetic meridian
(2) Closing error
(3) Magnetic declination (7 marks) 4(a) The following fore and back bearings are observed while running a closed traverse ABCDEA. Find out which stations are affected by local attraction and calculate correct bearing and included angles. Also apply necessary checks.