776. For excavating utility trenches with precise control of depth the excavation equipment used is:
777. Sewage sickness is a term used for
778. The sea-breeze blows during:?
779. Consider the following statements- with reference to a continuous beam supported at A, C and E for which the shear force diagram is shown in the given figure.There is
1. a concentrated load acting at point B
2. a concentrated load acting at point D
3. a uniformly distributed load acting on the portion CE.
Of these statements:
780. A bullet of mass 0.01 kg moving with a velocity of 401 m/s strikes a block of mass 4 kg which is free to move in the direction of the bullet, and gets embedded in it. The overall loss of kinetic energy is
781. A Treadle bar is used for
782. A vehicle is moving up an incline when the driver applies its brakes and the vehicle retards at 0.5 m/s2. Then according to D'Alembert's principle
783. Consider the following statements :
A : The load factor for live load is greater than that for dead load.
R : The live loads are more uncertain than dead loads.
Of these statements :
784. According to Boussinesq's theory, the vertical stress at a point in a semi-infinite soil mass depends upon
785. A star is observed at its western elongation. If the latitude of place of observation is θ, the declination of star is δ, altitude of star at elongation is α, then the hour angle of star is given by
786. For the simply supported beam in the figure, C is the centre of the span. C is also the point through which the resultant of the column load W passes. The column rests on the beam over a small length symmetrically on either side of C. What is the shearing force at C ?
787. A 20 m chain was found to be 10 cm too long after chaining a distance of 2000 m. It was found to be 18 cm too long at the end of the day's work after chaining a total distance of 4000 m. What is the true distance if the chain was correct before the commencement of the day's work ?
788. Timber can be made reasonably fire-resistant by
789. A jet of water issues from a 5 cm diameter nozzle, held vertically upwards, at a velocity of 20 m/sec. If air resistance consumers 10% of the initial energy of the jet, then it would reach a height, above the nozzle, of
790. A given material has Young's modulus E, modulus of rigidity G and Poisson's ratio of Young's modulus to modulus of rigidity of this material is,
791. The force in the member BD of the truss shown in the given figure is
792. Which of the following instruments have both horizon glass and index glass ?
1. Optical square
2. Line ranger
3. Box sextant
4. Pedometer
Select the correct answer using the code given below :
793. Which of the following equations are used for the derivation of the differential equation for water surface profile in open channel flow :
1. Continuity equation
2. Energy equation
3. Momentum equation
Select the correct answer using the codes given below :
794. If the difference of height between two points is 1 m and the slope distance between them is 100 m, then accuracy of slope correction determination could be 1 in 1, 00, 000, provided the heights are measured with an accuracy of
795. Which one of the following is a method of extending the length of record for a frequency curve at a station ?
796. Consider the following statements regarding a simply supported beam subjected to a uniformly distributed load over the entire span :
1. The bending moment is maximum at the central position.
2. The shear force is zero at the central position.
3. The slope is maximum at the middle position.
Of these statements :
797. CRISIL (Credit Rating Information Service of India Ltd) was set up in?
798. Which one of the following is not a standard spike for railways ?
799. A column section as indicated in the given figure is loaded with a concentrated load at a point 'F' so as to produce maximum bending stress due to eccentricities about xx axis and yy axis as 5 t/m2 and 8 t/m2 respectively. If the direct stress due to loading is 15 t/m2 (compressive), then the intensity of resultant stress at the corner 'B' of the column section is
800. A vertical gate 6 m x 6 m holds water on one side with the free surface at its top. The moment about the bottom edge of the gate of the water force will be (v is the specific weight of water)