P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area
of cross section is’ A’ and sectional modulus is ‘Z’ . The maximum stress ‘f’ in the beam, subjected
to a maximum bending moment , ‘M’ is

“An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media”. This phenomenon is known as:

(Where, ‘Fa’ is the load shared by each rivet due to axial load and ‘Fm’ is the shearing load due to moment in any rivet.)

[A + (m – 1)Asc] known as equivalent concrete area of R.C.C. is given by

1% of voids in a concrete mix would reduce its strength by about

1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0
kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

1000 kg of sewage contains

135 litres of water per person per day, is provided in

23 cm x 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents

260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air bubbles was 1415 g and the weight of pycnometer filled with water alone was 1275 g. The moisture content in the soil is

3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is

3/4th or 1/4th extra space is left in sewer pipes at maximum discharge for

30 m long rails are used in

45 litres of water per person per day, is provided in

5 days-biochemical oxygen demand (BOD5) is taken at a temperature of

52 kg rails are mostly used in

60 R rails are mostly used in

A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than

A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping?
(i)      1.0 in from the wall
(ii)     1.732 m from the wall
(iii)     1.0 m above the floor
(iv)      1.732 m above the floor The correct answer is

A 20 mm dia steel bar which is subjected to an axial tension of 2300 kg/cm2 produces a strain of 0.004 cm. If Young’s modulus of steel is 2.1 x 106 kg/cm2, the bar is

A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from
wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from
the centre line of the wall. The resultant eccentricity ratio is

A 200 mmthick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear
height between RCC slabs at top and bottom. The slenderness ratio of the wall is

A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mmz. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is

A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be

A 50 kg boy climbs up a 8 m rope in gymnasium in 10 sec. The average power developed by the boy is approximately

A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesion-less soil under an intensity of loading of 0.2 N/ramz. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is

A’ and ‘S’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

A back sight

A badly mixed cement concrete results in

A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is

A ball is dropped from a height of 2.25 m on a smooth floor and rises to a height of 1.00 m after the bounce. The coefficient of restitution between the ball and the floor is

A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be

A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball ‘B’ on the table. If the impact is perfectly plastic, the velocity of the ball ‘B’ just after impact would be

A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight

A balloon lifting in air follows the following principle

A beam curved in plan is designed for

A beam is defined as a structural member subjected to

A beam may be designed as a cased beam if

A bearing of a line is also known as

A block in the shape of a parallelepiped of sides 1m * 2m * 3m lies on the surface. Which of the faces gives maximum stable block?

A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is

A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

A body floats in stable equilibrium

A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will

A body is said to be in equilibrium if

A body is said to move with Simple Harmonic Motion if its acceleration, is

A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was

A Broad Gauge branch line takes off as a contrary flexure from a main line. If the super-elevation required for branch line is 10 mm and cant deficiency is 75 mm, the super-elevation to be actually provided on the branch line will be

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

A bull nose brick is not used for

A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is
(i)      5000 Nm
(ii)     5000 kg.m
(iii)     5000 J
The correct answer is

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 butt weld is specified by

A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be

A cantilever carrying a uniformly distributed load W over its full length is propped at its free end
such that it is at the level of the fixed end. The bending moment will be zero at its free end also at

A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 x 106 N/mm2, the deflection of the free end, is

A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan”1 x, where x is (Assume g = 10 m/sec2)

A cement concrete road is 1000 m long, 8 m wide and 15 cm thick over the sub-base of 10 cm thick gravel. The box cutting in road crust is

A centrifugal pump is required to be primed before starting if it is located

A channel is said to be of most economical cross-section, if

A circular column section is generally not used in actual practice because

A circular gravity aqueduct is not generally preferred to because of

A circular sewer section is preferred to because

A circular slab subjected to external loading, deflects to form a

A city supply includes

A clay subjected to pressure in excess to its present over-burden, is said to be

A clinometer is used for

A close coil helical spring when subjected to a moment M having its axis along the axis of the helix

A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is

A column is regarded as long column if the ratio of its effective length and lateral dimension,
exceeds

A column is said to be of medium size if its slenderness ratio is between

A column splice is used to increase

A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is

A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised

A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

A compound truss may be formed by connecting two simple rigid frames, by

A compression member consisting of angle sections may be a

A concrete having a slump of 6.5 cm, is said to be

A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to

A concrete using an air entrained cement

A construction joint is provided where

A construction schedule is prepared after collecting

A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth
(1/D) is less than

A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall
depth, is

A contractor has two options; (I): Invest his money in project A or (II): Invest his money in project B. If he decides to invest in A, for every rupee invested, he is assured of doubling his money in ten years. If he decides to invest in B, he is assured of making his money 1.5 times in 5 years. If the contractor values his money at 10% interest rate, he

A counter berm is

A covering of concrete placed on the exposed top of an external wall, is known as

A CPM family includes

A critical hydraulic gradient may occur when

A critical ratio scheduling

A CST-9 sleeper consists of

A cube on a smooth horizontal surface

A current meter measures the velocity of flow, if it is held

A cut in frame of a door to receive the shutter, is called

A cylinder is said to be thin if the ratio of its thickness and diameter, is less than

A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/mz when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

A decrease in water content results in a reduction of the volume of a soil in