If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is (A) h + h1) (B) h - h1) (C) h × h1) (D) 3.86 h + h1)

If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then
the horizontal distance from the ship to the light house in kilometres is
(A) h + h1)
(B) h - h1)
(C) h × h1)
(D) 3.86 h + h1)
by

1 Answer

Answer :

(A) h + h1)
by

Related questions

A ball is allowed to fall freely from a height of 3 metres on to a fixed plate. If the successive rebound heights are h1, h2, h3 a.5 metres b.4.25 metre c.0.5 metre d.1 metre e.Zero

Description : A ball is allowed to fall freely from a height of 3 metres on to a fixed plate. If the successive rebound heights are h1, h2, h3 a.5 metres b.4.25 metre c.0.5 metre d.1 metre e.Zero

Last Answer : a. 5 metres

If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is (A) 0.15 (B) 0.20 (C) 0.28 (D) 0.34

Description : If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is (A) 0.15 (B) 0.20 (C) 0.28 (D) 0.34

Last Answer : (D) 0.34

If A is the projected area of a vehicle in square metres, V is speed of the vehicles in kilometres per hour and C is a constant, then the wind resistance R to the moving vehicles, is given by (A) R = CAV (B) R = CAV2 (C) R = CAV3 (D) R = C 2AV

Description : If A is the projected area of a vehicle in square metres, V is speed of the vehicles in kilometres per hour and C is a constant, then the wind resistance R to the moving vehicles, is given by (A) R = CAV (B) R = CAV2 (C) R = CAV3 (D) R = C 2AV

Last Answer : Answer: Option B

If N is the algebraic difference of grades, S is the head light beam distance in metres, the length (L) of a valley curve, is (A) NS²/4 (B) NS²/6 (C) NS²/9.6 (D) NS²/4.8

Description : If N is the algebraic difference of grades, S is the head light beam distance in metres, the length (L) of a valley curve, is (A) NS²/4 (B) NS²/6 (C) NS²/9.6 (D) NS²/4.8

Last Answer : Answer: Option A

A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is (A) 1250 kg (B) 125 kg (C) 750 kg (D) 2500 kg

Description : A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is (A) 1250 kg (B) 125 kg (C) 750 kg (D) 2500 kg

Last Answer : (A) 1250 kg

If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span, (A) Horizontal thrust is wl2 /8h (B) S.F. will be zero throughout (C) B.M. will be zero throughout (D) All the above

Description : If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit  length over the entire span,  (A) Horizontal thrust is wl2 /8h (B) S.F. will be zero throughout  (C) B.M. will be zero throughout  (D) All the above 

Last Answer : (D) All the above 

The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach) (A) (2/3) Cd × L. 2g [H1 - Ha] (B) (2/3) Cd × L. 2g [H1 3/2 - Ha 3/2] (C) (2/3) Cd × L. 2g [H1 2 - Ha 2 ] (D) (2/3) Cd × L. 2g [H1 5/2 - Ha 5/2]

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Last Answer : Answer: Option B

The maximum discharge over a broad crested weir is (A) 0.384 Cd × L × H1/2 (B) 0.384 Cd × L × H3/2 (C) 1.71 Cd × L × H1/(D) 1.71 Cd × L × H 3/

Description : The maximum discharge over a broad crested weir is (A) 0.384 Cd × L × H1/2 (B) 0.384 Cd × L × H3/2 (C) 1.71 Cd × L × H1/ (D) 1.71 Cd × L × H 3/

Last Answer : Answer: Option D

The piston of a steam engine moves in S.H.M. The crank rotates at 180 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 1 metre from the centre is a.8.88 m/sec b.16.32 m/sec c.5.88 m/sec d.8.16 m/sec e.Zero

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Last Answer : e. Zero

If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )

Description : If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )

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If N is the algebraic difference of grades, S is the minimum sight distance in metres, the length (L) of a summit curve is (A) NS/4 (B) NS²/4 (C) N²S/4(D) (NS)²/4

Description : If N is the algebraic difference of grades, S is the minimum sight distance in metres, the length (L) of a summit curve is (A) NS/4 (B) NS²/4 (C) N²S/4 (D) (NS)²/4

Last Answer : Answer: Option B

If N is the net difference of grades, S is the minimum overtaken sight distance in metres, the length (L) of a summit curve, is (A) NS/4 (B) NS²/4 (C) NS²/4.8 (D) NS²/9.6

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Last Answer : Answer: Option D

If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads). (A) y = L - (l - ) (B) y = L/2 + (l - ) (C) y = L/2 - (l + ) (D) y = L/2 - (l - )

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For stairs spanning l metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is (A) wl²/4 (B) wl²/8 (C) wl²/12 (D) wl²/16

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If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, Prismoidal correction for a level section is (A) D/2m(h1 - h2) (B) D/3m(h1 - h2) (C) D/6m(h1 - h2)2(D) D/6m(h1 - h2)3

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Which of the following R.C. retaining walls is suitable for heights beyond 6 m? (A) L-shaped wall (B) T-shaped wall (C) Counterfort type (D) All of the above

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If metres is the distance between extreme axles of a vehicle, its gross load should not exceed (A) 1525 (L + 4.3) - 14.7 L2 (B) 1526 (L + 5.3) - 14.7 L2 (C) 1525 (L + 6.3) - 14.7 L2 (D) 1525 (L + 7.3) - 14.7 L2

Description : If metres is the distance between extreme axles of a vehicle, its gross load should not exceed (A) 1525 (L + 4.3) - 14.7 L2 (B) 1526 (L + 5.3) - 14.7 L2 (C) 1525 (L + 6.3) - 14.7 L2 (D) 1525 (L + 7.3) - 14.7 L2

Last Answer : Answer: Option D

If L is the length of vehicles in metres, C is the clear distance between two consecutive vehicles (stopping sight distance), V is the speed of vehicles in km/hour, the maximum number N of vehicles/hour, is (A) N = 1000 V / (L + C) (B) N = (L + C) / 1000 V (C) N = 1000 L / (C + V) (D) N = 1000 C / (L + V)

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Last Answer : Answer: Option A

An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is (A) 8.3 kg/cm2 (B) 7.6 kg/cm2 (C) 21.5 kg/cm2 (D) 11.4 kg/cm2

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Last Answer : Answer: Option A

An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is (A) Safe in shear (B) Is safe with stirrups (C) Is safe with stirrups and inclined members (D) Needs revision of the section

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Last Answer : Answer: Option A

The combined effect of curvature and refraction over a distance kilometres is (A) 67.2 L2 mm (B) 76.3 L2 mm (C) 64.5 L2 mm (D) None of these

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Last Answer : (A) 67.2 L2 mm

A bed consists of particles of density 2000 kg/m3 . If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is (A) 25.61 kPa (B) 11.77 kPa (C) 14.86 kPa (D) 21.13 kPa

Description : A bed consists of particles of density 2000 kg/m3 . If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is (A) 25.61 kPa (B) 11.77 kPa (C) 14.86 kPa (D) 21.13 kPa

Last Answer : (B) 11.77 kPa

Distance of stars is measured in (a) Light years (b) Kilometres per second (c) Kilometres only (d) Nautical miles

Description : Distance of stars is measured in (a) Light years (b) Kilometres per second (c) Kilometres only (d) Nautical miles

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Pick out the wrong statement. (A) In the McCabe-Thiele diagram for binary distillation, vertical feed line represents saturated liquid feed and horizontal feed line represents saturated vapour feed (B) In small columns, local efficiency is larger than Murphree efficiency; in large columns local efficiency is smaller than Murphree efficiency (C) For Laminar flow over a plate of length L, the local mass transfer co￾efficient at a distance L from the leading edge is 1.5 × 10 -2m/s. Then the average mass transfer co-efficient for the plate is 2 × 10 -2m/s (D) The concentration and hydrodynamic boundary layers over a flat plate are of equal thickness, if Schmidt number is equal to unity

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A thin film is observed in white light. The color of the film seen at a particular point depends upon (a)Location of observer (b)Width of the source (c) Distance of the source (d) Brightness of the source

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Last Answer : (a)Location of observer

The hash function used in double hashing is of the form: (A) h(k, i)=(h1(k)+h2(k)+i)mod m (B) h(k, i)=(h1(k)+h2(k)-i)mod m (C) h(k, i)=(h1(k)+ih2(k))mod m (D) h(k, i)=(h1(k)-ih2(k))mod m

Description : The hash function used in double hashing is of the form: (A) h(k, i)=(h1(k)+h2(k)+i)mod m (B) h(k, i)=(h1(k)+h2(k)-i)mod m (C) h(k, i)=(h1(k)+ih2(k))mod m (D) h(k, i)=(h1(k)-ih2(k))mod m

Last Answer : Answer: C

The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. The total height of confined aquifer H is given by (A) H = h2 - h1 (B) H = h1 - h2 (C) H = h2 + h1 (D) ½ (h1 + h2)

Description : The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. ... (B) H = h1 - h2 (C) H = h2 + h1 (D) ½ (h1 + h2)

Last Answer : Answer: Option D

If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be (A) +50 m, +86.6 m (B) +86.6 m, -50 m (C) +50 m, -86.6 m (D) +70.7 m, -50 m

Description : If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be (A) +50 m, +86.6 m (B) +86.6 m, -50 m (C) +50 m, -86.6 m (D) +70.7 m, -50 m

Last Answer : (B) +86.6 m, -50 m

An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is (A) Wa/h (B) Wa/2h(C) 2W/ha(D) 2h/W

Description : An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of  span 2l and rise h hinged at the crown, the horizontal reaction at the support, is  (A) Wa/h  (B) Wa/2h (C) 2W/ha (D) 2h/W

Last Answer : (B) Wa/2h

A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17

Description : A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant ... inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17

Last Answer : (C) 12°

If C is basic capacity per lane, V is velocity in km/hour, S is stopping distance plus length of the vehicles in metres, the formula C = 1000V/S is applicable to (A) District roads (B) Two lane roads (C) Two lane roads in one direction (D) None of these

Description : If C is basic capacity per lane, V is velocity in km/hour, S is stopping distance plus length of the vehicles in metres, the formula C = 1000V/S is applicable to (A) District roads (B) Two lane roads (C) Two lane roads in one direction (D) None of these

Last Answer : Answer: Option C

The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Description : The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Last Answer : Answer: Option C

An observer moves towards a stationary plane mirror at a speed of 1 m/s. His image will move towards him at a speed of (a) 1 m/s (b) 4 m/s (c) 2 m/s (d) ½ m/s

Description : An observer moves towards a stationary plane mirror at a speed of 1 m/s. His image will move towards him at a speed of (a) 1 m/s (b) 4 m/s (c) 2 m/s (d) ½ m/s

Last Answer : Ans:(c)

The factor for the selection of pumping station site, is (A) Distance of the source of contamination or pollution (B) Height above the H.F.L. of the river (C) Future expansion (D) All the above

Description : The factor for the selection of pumping station site, is  (A) Distance of the source of contamination or pollution  (B) Height above the H.F.L. of the river  (C) Future expansion  (D) All the above

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If is the difference in level between end points separated by , then the slope correction is [(h²/2l) + (h 4 /8l3 )]. The second term may be neglected if the value of in a 20 m distance is less than (A) ½ m (B) 1 m (C) 2 m (D) 3 m

Description : If is the difference in level between end points separated by , then the slope correction is [(h²/2l) + (h 4 /8l3 )]. The second term may be neglected if the value of in a 20 m distance is less than (A) ½ m (B) 1 m (C) 2 m (D) 3 m

Last Answer : (D) 3 m

The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with a uniformly distributed load l t per horizontal length is (where Ic is the M.I. at the crown, which varies as the slope of the arch). (A) 50/EIc (B) 100/EIc (C) 150/EIc (D) 200/E

Description : The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with  a uniformly distributed load l t per horizontal length is (where Ic  is the M.I. at the crown, which  varies as the slope ... arch).  (A) 50/EIc (B) 100/EIc (C) 150/EIc (D) 200/E

Last Answer : (D) 200/E

If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is (A) wQH/15 (B) wQH/360 (C) wQH/220 (D) wQH/550

Description : If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is (A) wQH/15 (B) wQH/360 (C) wQH/220 (D) wQH/550

Last Answer : (A) wQH/15

What message does the story ̳His First Flight‘ convey? e) One can always count on his family f) For one to achieve great heights, one has to conquer his fear g) Parents only act strict with their children to benefit them h) Love can conquer all

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A building is 120 feet high. at a certain distance away from the building. an observer notices the angle of elevation to the top of the building is 41 degrees. how far is the observer from the base of the building?

Description : A building is 120 feet high. at a certain distance away from the building. an observer notices the angle of elevation to the top of the building is 41 degrees. how far is the observer from the base of the building?

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A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal. a) PSinθ(Sinθ+Cosθ)/hl b) P(Sinθ+Cosθ)/hl c) Pcosθ(Sinθ+Cosθ)/hl d) None of the listed

Description : A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal. a) PSinθ(Sinθ+Cosθ)/hl b) P(Sinθ+Cosθ)/hl c) Pcosθ(Sinθ+Cosθ)/hl d) None of the listed

Last Answer : a) PSinθ(Sinθ+Cosθ)/hl

A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal. a) PSinθ(Sinθ+Cosθ)/hl b) P(Sinθ+Cosθ)/hl c) Pcosθ(Sinθ+Cosθ)/hl d) None of the listed

Description : A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal. a) PSinθ(Sinθ+Cosθ)/hl b) P(Sinθ+Cosθ)/hl c) Pcosθ(Sinθ+Cosθ)/hl d) None of the listed

Last Answer : a) PSinθ(Sinθ+Cosθ)/hl

A body is projected from ground with speed 20 m/s making an angle of `45^(@)` with horizontal. The equation of path is `h = Ax-Bx^(2)`, where h is hei

Description : A body is projected from ground with speed 20 m/s making an angle of `45^(@)` with horizontal. The equation of path is `h = Ax-Bx^(2)`, where h is hei

Last Answer : A body is projected from ground with speed 20 m/s making an angle of `45^(@)` with horizontal. The equation of path ... B. 5 : 1 C. 1 : 40 D. 40 : 1

If the intercept on a vertical staff is observed as 0.75 m from a tachometer, the horizontal distance between tachometer and staff (A) 7.5 m (B) 25 m (C) 50 m (D) 75 m

Description : If the intercept on a vertical staff is observed as 0.75 m from a tachometer, the horizontal distance between tachometer and staff (A) 7.5 m (B) 25 m (C) 50 m (D) 75 m

Last Answer : (D) 75 m

Pick up the incorrect statement from the following: (A) Lead is the average horizontal straight distance between the borrow pit and the place of spreading soil (B) The lead is calculated for each block of the excavated area (C) The unit of lead is 50 m for a distance upto 500 m (D) The unit of lead is 1 km where the lead exceeds 2 km

Description : Pick up the incorrect statement from the following: (A) Lead is the average horizontal straight distance between the borrow pit and the place of spreading soil (B) The lead is calculated for each block of the ... a distance upto 500 m (D) The unit of lead is 1 km where the lead exceeds 2 km

Last Answer : (D) The unit of lead is 1 km where the lead exceeds 2 km

If S, L and R are the arc length, long chord and radius of the sliding circle then the perpendicular distance of the line of the resultant cohesive force, is given by (A) a = S.R/L (B) a = L.S/R (C) a = L.R/S (D) None of these

Description : If S, L and R are the arc length, long chord and radius of the sliding circle then the perpendicular distance of the line of the resultant cohesive force, is given by (A) a = S.R/L (B) a = L.S/R (C) a = L.R/S (D) None of these

Last Answer : (A) a = S.R/L

A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be __________ metres. (A) 2 (B) 4 (C) 8 (D) 5.5

Description : A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be __________ metres. (A) 2 (B) 4 (C) 8 (D) 5.5

Last Answer : (A) 2

If the velocity of moving vehicles on a road is 24 km/per hour, stopping distance is 19 metres and average length of vehicles is 6 metres, the basic capacity of lane, is (A) 500 vehicles per hour (B) 700 vehicles per hour (C) 1000 vehicles per hour (D) 1250 vehicles per hour

Description : If the velocity of moving vehicles on a road is 24 km/per hour, stopping distance is 19 metres and average length of vehicles is 6 metres, the basic capacity of lane, is (A) 500 vehicles per hour (B) 700 vehicles per hour (C) 1000 vehicles per hour (D) 1250 vehicles per hour

Last Answer : Answer: Option C

If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in square kilometres is A, the total run-off Q, is given by (A) Q = 1.758 × 102 × API(B) Q = 2.758 × 102 × API(C) Q = 2.758 × 103 × API(D) Q = 2.758 × 103 × A/PI

Description : If intensity of rainfall in cm per hour is I, percentage coefficient of run-off is P, area of catchment in  square kilometres is A, the total run-off Q, is given by  (A) Q = 1.758 102   API (B) Q = 2.758 ... API (C) Q = 2.758 103   API (D) Q = 2.758 103   A/PI

Last Answer : (C) Q = 2.758 × 103  × API

If is in kilometres, the curvature correction is (A) 58.2 L2 mm (B) 64.8 L2 mm (C) 74.8 L2 mm (D) 78.4 L2 mm

Description : If is in kilometres, the curvature correction is (A) 58.2 L2 mm (B) 64.8 L2 mm (C) 74.8 L2 mm (D) 78.4 L2 mm

Last Answer : (D) 78.4 L2 mm