6th Ref Exam (Civil Engineering) Part 1

c. 45°

A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is: a. 0° b. 30° c. 45° d. 60° e. 90°

a. benchmark

A relatively fixed point of known elevation above datum, is called: a. benchmark b. datum point c. reduced level d. reference point

b. Centripetal force

A satellite moves in its orbit around the earth due to: a. Gravitational force b. Centripetal force c. Centrifugal force d. none of these

d. 25 N

A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5rad/sec. The tension in the string is, a. 5 N b. 10 N c. 15 N d. 25 N

b. parabolic

An ideal vertical curve to join two gradients,is: a. circular b. parabolic c. elliptical d. hyperbolic

c. contour line

An imaginary line joining the points of equal elevation on the surface of the earth, represents a. contour surface b. contour gradient c. contour line d. level line

d. 10 km/hrs

At a given instant ship A is travelling at 6km/h due east and ship B is travelling at 8 km/h due north. The velocity of B relative to A is gle choice. (1/1 Point) a. 7 km/hrs b. 2 km/hrs c. 1 km/hrs d. 10 km/hrs

b. Fore bearing ± 180°

Back bearing of a line is equal to: a. Fore bearing ± 90° b. Fore bearing ± 180° c. Fore bearing ± 360° d. Fore bearing ± 270°

b. a depression

Closed contours of decreasing values towards their center, represent a. a hill b. a depression c. a saddle or pass d. a river bed

a. ML-1T-1

Dimension of absolute viscosity is a. ML-1T-1 b. MLT-1 c. ML-1T d. MLT

d. all the above

Effect of a force on a body depends upon its a. direction b. magnitude c. position d. all the above

d. none of these

Failure of a slope occurs only when total shear force is: a. equal to total shearingstrength b. greater than total shearing strength c. less than total shearing strength d. none of these

b. depth

Fathom is the unit of: a. sound b. depth c. frequency d. distance

e. all the above

For a closed traverse the omitted measurements may be calculated: a. length of one side only b. bearing of one side only c. both length and bearing of one side d. length or bearing of adjacent side e. all the above

e. 2°51'.53.

For a curve of radius 100 m and normal chord 10m, the Rankine's deflection angle, is a. 0°25'.95 b. 0°35'.95 c. 1°25'.53 d. 1°35'.95 e. 2°51'.53.

c. 0.25

For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value of Poisson's ratio is a. 0.15 b. 0.20 c. 0.25 d. 0.30

c. 1.0

For perfectly elastic bodies, the value of coefficient of restitution is: a. zero b. 0.5 c. 1.0 d. between 0 and 1

d. discharge flowing in the river

Hydrograph is a graphical representation of a. surface run off b. ground water flow c. rain fall d. discharge flowing in the river

c. a variable acceleration

If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with a. a uniform retardation b. a uniform acceleration c. a variable acceleration d. a variable retardation

d. 5 rad/sec

If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be: a. 20 rad/sec b. 15 rad/sec c. 10 rad/sec d. 5 rad/sec

b. the same line in opposite sense

If two forces acting at a point are inequilibrium, they must be equal in magnitude and their line of action must be along a. the same line in the same sense b. the same line in opposite sense c. the perpendicular to both the lines d. none of these

a. isogon

Imaginary line passing through points having equal magnetic declination is termed as: a. isogon b. agonic line c. isoclinic line d. none of these

b. 2/5

In a lottery, there are 10 prizes and 25 blanks.A lottery is drawn at random. What is the probability of getting a prize? a. 1/10 b. 2/5 c. 2/7 d. 5/7

a. linear measurements only

In chain surveying field work is limited to a. linear measurements only b. angular measurements only c. both linear and angular measurements d. all the above

c. both (a) and (b)

In levelling operation a. when the instrument is being shifted, the staffmust not be moved. b. when the staff is being carried forward, the instrument must remain stationary. c. both (a) and (b) d. neither (a) nor (b)

c. changing the cardinal points, i.e. substituting N for S and E for W and vice-versa

In quadrantal bearing system, back bearing of aline may be obtained from its forward bearing, by: a. adding 180°, if the given bearing is less than180° b. subtracting 180°, if the given bearing, is more than 180° c. changing the cardinal points, i.e. substituting N for S and E for W and vice-versa d. none of these.

b. pressure

Isobaric process means a constant process. a. temperature b. pressure c. volume d. entropy

d. rainfall

Isohytes are the imaginary lines joining the points of equal a. pressure b. height c. humidity d. rainfall

c. Stellar distances

Light year is a measurement of: a. speed of aeroplanes b. speed of light c. Stellar distances d. speed of rockets

a. isothermal

Maximum work that could be secured by expanding the gas over a given pressure range is the a. isothermal b. adiabatic c. isentropic d. none of these

c. positive cumulative error

Measuring with a 30 m chain, 0.01 m too short, introduces: a. positive compensating error b. negative compensating error c. positive cumulative error d. negative cumulative error

a. 6 feet

One fathom is equal to a. 6 feet b. 6 meters c. 60 feet d. 100 cm

b. multiplying constant

One of the tacheometric constants is additive, the other constant, is a. subtractive constant b. multiplying constant c. dividing constant d. indicative constant

b. Erection of Form work - Pouring of Concrete - Curing of concrete - Removal of Form work

Pick up the correct network for the activities of pouring concrete, erection of form work, removal of form work and curing of concrete from the following: a. Pouring of Concrete - Erection of Form work -Curing of concrete - Removal of Form work b. Erection of Form work - Pouring of Concrete - Curing of concrete - Removal of Form work c. Removal of Form work - Pouring of Concrete - Erection of Form work - Curing of Concrete. d. Pouring of Concrete - Curing of concrete - Erection of Form work- Removal of Form work

b. convective precipitation

Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called: a. cyclonic precipitation b. convective precipitation c. orographic precipitation d. none of these

c. same at every point on its line of action

Principle of Transmissibility of Forces states that, when a force acts upon a body, its effect is a. maximum if it acts at the center of gravity of the body b. different at different points on its line of c. same at every point on its line of action d. minimum if it acts at the C.G. of the body

b. 3.5%

The average salinity of sea water is: a. 3% b. 3.5% c. 2.5% d. 2%

a. medians of the triangle meet

The center of gravity of a triangle is at the point where three a. medians of the triangle meet b. perpendicular bisectors of the sides of the triangle meet c. bisectors of the angle of the triangle meet d. none of these

a. 13.75 m

The desired sensitivity of a bubble tube with 2mm divisions is 30". The radius of the bubble tube should be: a. 13.75 m b. 3.44 m c. 1375 m d. None of these

a. 2

The equation of motion of a particle starting from rest along a straight line is x = t3 - 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be a. 2 b. 3 c. 4 d. 5

a. Bar chart method

The first method invented for planning projects,was a. Bar chart method b. Milestone chart c. Critical path method (CPM) d. Program Evaluation and Review Technique (PERT)

c. stability of structure

The foundations are placed below ground level,to increase: a. strength b. workability c. stability of structure d. all the above

a. nitrogen

The gas usually filled in the electric bulb is: a. nitrogen b. hydrogen c. carbon dioxide d. oxygen

c. interia

The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is: a. weight b. mass c. interia d. momentum

c. cosine of its reduced bearing

The latitude of a traverse leg is obtained bymultiplying its length by a. tangent of its reduced bearing b. sign of its reduced bearing c. cosine of its reduced bearing d. cosecant of its reduced bearing

d. original velocity in the opposite direction

The masses of two balls are in the ratio of 2 :1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is 1/2 , the velocities of separation of the balls will be equal to a. original velocity in the same direction b. half the original velocity in the same direction c. half the original velocity in the opposite direction d. original velocity in the opposite direction

d. all the above

The maximum possible value of dry density is referred to as: a. dry density b. zero air voids c. saturation dry density d. all the above

d. BD

The member which does not carry zero force in the structure shown in below figure, is a. ED b. DC c. BC d. BD

c. suction minus vapor pressure of the liquid at suction temperature.

The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the a. discharge. b. suction. c. suction minus vapor pressure of the liquid at suction temperature. d. discharge minus vapor pressure of the liquid at the discharge temperature

d. having no motion of one fluid layer relative to the other.

The normal stress is the same in all directions at a point in a fluid, when the fluid is a. non-viscous. b. incompressible. c. both (a) and (b). d. having no motion of one fluid layer relative to the other.

d. balancing the traverse

The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known: a. balancing the sights b. balancing the departures c. balancing the latitudes d. balancing the traverse

c. Activity

The performance of a specific task in CPM, is known as a. Dummy b. Event c. Activity d. Contract

b. momentum

The product of mass and velocity of a moving a body, is called a. moment b. momentum c. power d. impulse

d. 2

The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is a. 0.5 b. 1 c. 1.5 d. 2

a. 1/4

The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is a. 1/4 b. 1/2 c. 3/4 d. 2

a. 3.75 cm

The slope correction for a length of 30 m along a gradient of 1 in 20, is a. 3.75 cm b. 0.375 cm c. 37.5 cm d. 2.75 cm

d. all the above

The specific yield of soil depends upon: a. compaction of stratum b. distribution of pores c. shape and size of particles d. all the above

d. 20

The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be: a. 12 b. 14 c. 18 d. 20

a. dyne

The unit of force in C.G.S. system of units, is called a. dyne b. Newton c. kg d. all the above

d. 9/20

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5? a. 1/2 b. 2/5 c. 8/15 d. 9/20

c. these remain constant.

True meridians are generally preferred to magnetic meridians because: a. these converge to a point b. these change due to change in time c. these remain constant. d. None of these.

b. rapid pressure changes due to a rapid change in the rate of flow.

Water hammer in a pipeline results from the a. bursting of pipelines due to closure by a valve. b. rapid pressure changes due to a rapid change in the rate of flow. c. pressure increase due to closure of a valve resulting in decrease in rate of flow. d. none of these.

c. 1/9

What is the probability of getting a sum 9 from two throws of a dice? a. 1/6 b. 1/8 c. 1/9 d. 1/12

a. line of sight ishorizontal.

When the bubble of the level tube of a level, remains central: a. line of sight ishorizontal. b. axis of the telescope is horizontal. c. line of collimation is horizontal. d. geometrical axis of the telescope is horizontal.

d. None of these

Which of the following is not a dimensionless parameter ? a. Euler number b. Specific gravity c. Fanning friction factor d. None of these

a. Graphite

Which of the following is used in pencils? a. Graphite b. Silicon c. Charcoal d. Phosphorous

a. 400 watts

A 50 kg boy climbs up a 8 m rope in gymnasium in10 sec. The average power developed by the boy is approximately: a. 400 watts b. 500 watts c. 4000 watts d. None of these

a. 10/21

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue? a. 10/21 b. 11/21 c. 2/7 d. 5/7

b. 4/7

A bag contains 6 black and 8 white balls. Oneball is drawn at random. What is the probability that the ball drawn is white? a. 3/4 b. 4/7 c. 1/8 d. 3/7

d. 0.67

A ball is dropped from a height of 2.25 m on asmooth floor and rises to a height of 1.00 m after the bounce. The coefficientof restitution between the ball and the floor is: a. 0.33 b. 0.44 c. 0.57 d. 0.67

b. 0.05 m/sec

A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be a. 0.01 m/sec b. 0.05 m/sec c. 1.00 m/sec d. 1.50 m/sec

d. 10

A is two years older than B who is twice as oldas C. If the total of the ages of A, B and C be 27, then how old is B? a. 7 b. 8 c. 9 d. 10

b. may be replaced by a single force

A number of forces acting simultaneously on aparticle of a body a. may not be replaced by a single force b. may be replaced by a single force c. may be replaced by a single force through C.G. of the body d. may be replaced by a couple

c. 20 sec

A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is a. 40 sec b. 30 sec c. 20 sec d. 15 sec