Description : A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is (A) 100 tonnes (B) 50 tonnes (C) 20 tonnes (D) 10 tonnes
Last Answer : (D) 10 tonnes
Description : Most of the centrifugal pumps used in chemical plants are usually __________ driven. (A) Steam (B) Diesel engine (C) Electric motor (D) Gas turbine
Last Answer : (C) Electric motor
Description : Under-reamed piles are generally (A) Driven piles (B) Bored piles (C) Precast piles (D) All the above
Last Answer : (B) Bored piles
Description : The additional piles which are driven to increase the capacity of supporting loads on vertical piles, are known (A) Construction piles (B) Raking piles (C) Eccentric piles (D) Sinking piles
Last Answer : Answer: Option B
Description : Pick up the correct statement from the following: (A) The pile driven in sand is called sand pile (B) The drilled hole filled with sand is called sand pile (C) The sand piles are used for bearing purposes (D) None of these
Last Answer : Option A
Description : On piles, the drop must be at least (A) 80 cm (B) 100 cm (C) 120 cm (D) 140 cm
Last Answer : Answer: Option C
Description : Engineering news formula for obtaining safe bearing capacity of pile for drop hammer, is, (A) Q = Wh/6 (S + 2.5) (B) Q = Wh/2.5 (S + 6) (C) Q = (W × 6)/h (S + 2.5) (D) Q = (W × 2.5)/6 (S + h)
Last Answer : Answer: Option A
Description : Which of the following is/are true concerning electric power operated watertight door systems? A. Each motor driven door must use the main bus as its source of power. B. Each distribution panel for ... to permit quick activation of the system. D. Each system must have a separate branch circuit.
Last Answer : Answer: D
Description : A diesel driven emergency generator is prevented from being paralleled with the ship's service generators by __________. A. an electrical interlock system B. an automatic paralleling trip switch C. the synchronizing oscilloscope D. the reverse current relay
Last Answer : Answer: A
Description : Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and ... trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.
Last Answer : (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
Description : State whether the Diesel Engine Driven Monoset Pumps for agricultural purposes have been notified under the voluntary labelling. A. True. B. False.
Last Answer : true
Description : In drop forging process, the forging is done by dropping the __________ at high velocity. (A) Hammer (B) Workpiece (C) Die with hammer (D) Weight on hammer
Last Answer : (C) Die with hammer
Description : Water hammer is caused in steam carrying pipelines, because of (A) Partial condensation of steam (B) Vibration of the pipeline (C) High degree of superheat of steam (D) Its exposure to torrential rain
Last Answer : (A) Partial condensation of steam
Description : What was the problem of steam driven torpedoes in World War 2 submarine warfare?
Last Answer : Steam powered submarine torpedoes had a flaw when a submarinefired torpedoes in daylight. The torpedoes created a massive streamof bubbles that rose to the surface of the ocean and enemy shipscould ... captured some of the enemy torpedoes and usedthem for models of their own new electric torpedoes.
Description : An LED is operated on a 12 volt automobile circuit. The voltage drop across the LED is 2 volts and the current must be limited to 50 milliamps to prevent its overheating and destruction. What size resistor must be used? w) 60 ohms x) 100 ohms y) 120 ohms z) 200 ohms
Last Answer : ANSWER: Z -- 200 OHMS
Description : Should raking piles of a bridge abutment be placed under an embankment?
Last Answer : For a bridge abutment to be supported on raking piles with different orientations, the movement between the ground and the pile group is difficult to predict. For instance, if some of the raking ... experience severe bending moment and damage the piles as recommended by Dr. Edmund C Hambly (1979).
Description : Number of piles required to support a column, is (A) 1 (B) 2 (C) 3 (D) 4
Last Answer : (C) 3
Description : The minimum centre to centre distance of friction piles of 1 m diameter, is (A) 2 m (B) 2 m to 3 m (C) 3 m to 4 m (D) 5 m
Last Answer : (C) 3 m to 4 m
Description : Negative skin friction on piles (A) Is caused due to relative settlement of the soil (B) Is caused in soft clays (C) Decreases the pile capacity (D) All of the above
Last Answer : Answer: Option D
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 20 cm (B) 30 cm (C) 40 cm (D) 75 cm
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 5 cm (B) 10 cm (C) 15 cm (D) 20 cm
Description : The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are (A) 1500 bags (B) 2000 bags (C) 2500 bags (D) 3000 bags
Description : If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is (A) 2000 bags (B) 2200 bags (C) 2400 bags (D) 2700 bags
Description : Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these
Description : In places where the soil is soft and has small resistance to the flow of concrete, which one of the following types of piles, is used (A) Vibro pile (B) Pressure pile (C) Franki pile (D) Pedestal pile
Description : Best type of piles for soft soil having little resistance to the flow of concrete, is (A) Simplex pile (B) Vibro pile (C) Raymond pile (D) Franki pile
Description : Bearing capacity of soils cannot be improved by (A) Draining sub-soil water (B) Ramming crushed stone in soil (C) Driving sand piles (D) Watering surface of soil
Description : Which one of the following piles has a cast iron shoe even after removal of the hollow cylindrical steel casing? (A) Simplex pile (B) Pedestal pile (C) Vibro pile (D) Both (a) and (c) of the above
Description : The bearing capacity of piles is determined by (A) Dynamic formula (B) Static formula (C) Pile load tests (D) All the above
Description : Under reamed piles are generally used for (A) Machine foundations (B) Factory building (C) Tall structures (D) All the above
Description : Pick up the correct statement from the following: (A) The bearing capacity of a pile is defined as the load which can be sustained by the pile without producing excessive settlement (B) The safe bearing capacity ... of safety (C) The factor of safety for piles is taken as 6 (D) All the above
Description : Pick up the correct statement from the following: (A) The sand in the sand pile is well compacted (B) The sand is kept moist at the time of placing and tamping (C) Sand piles are generally used under column loads (D) All of the above
Description : The minimum distance between the centres of bulb of diameter du, of a multi under reamed piles, is (A) du (B) 1.25 du (C) 1.5 du (D) 1.75 du
Description : Suitable spacing of timber piles, is (A) 50 cm (B) 60 cm (C) 80 cm (D) 90 cm
Description : In case of Raymond pile (A) Lengths vary from 6 m to 12 m (B) Diameter of top of piles varies from 40 cm to 60 cm (C) Diameter of pile at bottom varies from 20 cm to 28 cm (D) All the above
Description : Consider the following statements: 1. Friction piles are also called floating piles 2. Minimum number of piles to qualify as a pile group is three. 3. The group efficiency of a pile group may be either less than 100% or more than 100%. ... ) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (a) 1, 2 & 3
Description : A single force and a couple acting in the same plane upon a rigid body (A) Balance each other (B) Cannot balance each other (C) Produce moment of a couple (D) Are equivalent
Last Answer : (B) Cannot balance each other
Description : Triac are usually operated at:
Last Answer : Triac are usually operated at: power frequency
Description : Which of the following is not an internal combustion engine? a. petrol engine b. steam turbine c. diesel engine d. gas turbine
Last Answer : ANSWER b. steam turbine
Description : A spark plug is used in a. petrol engine b. diesel engine c. gas engine d. steam engine
Last Answer : ANSWER a. petrol engine
Description : In hydel power station, the motion produced in turbines is due to – (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam
Last Answer : (1) flow of water Explanation: A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Hydroelectric power comes from water at work, water in motion. To generate electricity, water must be in motion. This is kinetic (moving) energy.
Description : Which of the following has the least thermal efficiency? (A) Steam engine (B) Carnot engine (C) Diesel engine (D) Otto engine
Last Answer : A) Steam engine
Description : Submarines move under water. They have engines that run on (1) Petrol and oxygen (2) Diesel (3) Batteries (4) Steam
Last Answer : Diesel
Description : In hydel power station, the motion produced in turbines is due to (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam
Last Answer : flow of water
Description : What is the greatest distance you have ever driven in a single day?
Last Answer : I drove from Pittsburgh to Boulder several times over the span of 24 hours. It takes almost exactly that long….and it’s not a super exciting drive so it’s best just to get it over with. That’s about 1500 miles too. I don’t like driving that far that fast though, I like to take my time.
Description : If a single phase motor is driven in any direction by any means, it starts running in that direction. Explain why?
Last Answer : Actually a pulsating torque has two components which are equal in magnitude and rotate in opposite direction with synchronous speed at unity slip. Now if the motor rotates in any direction, the ... component in this direction increases than the other component and hence motor runs in that direction.
Description : If concrete compression test fails, should Schmidt hammer test be adopted as an alternative test to prove the concrete strength?
Last Answer : The Scmidt hammer test is based on the elastic rebound of hammer which presses on concrete surface and it measures the surface hardness of concrete. Since the test is very sensitive to the ... strength of concrete. Therefore, it may not be considered a good substitute for concrete compression test.
Description : Pick up the correct statement from the following: (A) Air lift pumps are generally used for pumping water from deep wells (B) Jet pumps are generally used for pumping water from small wells (C) The hydraulic ram works on the principle of water hammer (D) All the above
Last Answer : (D) All the above
Description : Critical time for developing a water hammer, is the time required for (A) Closing the valve (B) The wave to travel from valve to the reservoir (C) The wave to travel from the valve to the reservoir and back (D) None of these
Last Answer : (C) The wave to travel from the valve to the reservoir and back
Description : Surge tanks are used (A) For storage water (B) To increase the velocity in a pipeline (C) As overflow valves (D) To guard against water hammer
Last Answer : (D) To guard against water hammer