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A water pumping system is being driven by a propeller type wind turbine having the power coefficient of 0.4. The total pumping head and rate of discharge are 20 m and 7.0 L s^-1, respectively. Mean wind velocity is 18 km h^-1 and the density of air i1 AnswerA test is conducted on a one-fifth scale model of a Francis turbine under a head of 2 m and volumetric flow rate of 1 m3/s at 450 rpm. Take the water density and the acceleration due to gravity as 103 kg/m3 and 10 m/s2, respectively. Assume no losses both in model and prototype turbines. The power (in MW) of a full sized turbine while working under a head of 30 m is _______ (correct to two decimal places).0 AnswerThe term ‘Working head’ in context of water supply system means, GATE- Architecture and Planning- 2013 1 AnswerA calorically perfect gas (specific heat at constant pressure 1000 J/kg.K) enters and leaves a gas turbine with the same velocity. The temperatures of the gas at turbine entry and exit are 1100 K and 400 K, respectively. The power produced is 4.6 MW and heat escapes at the rate of 300 kJ/s through the turbine casing. The mass flow rate of the gas (in kg/s) through the turbine is1 AnswerA venturi meter is installed to measure the flow rate of water in a 178 mm diameter (ID) pipe. The throat diameter is 102 mm. The differential pressure measured using a manometer is 154.3 kN/m2. The data given are: discharge coefficient = 0.98; water density = 1000 kg/m3. The volumetric flow rate of water (in m3/s) is _________. 0 AnswerAt 30°N and 700 hPa pressure level, wind field is in gradient balance. If the gradient wind speed is 50 m s–1 and radius of curvature of the flow is 50 km, the corresponding geostrophic wind speed is __________ m s–1. (Give the answer to one decimal place.) Take the angular velocity of the Earth as 7.3x10–5 s–10 AnswerWhich one of the following is a WRONG statement? (GATE-Agricultural-Engineering-2018)0 AnswerWhich one of the following is favor able for an airplane operation? GATE- Aerospace1 AnswerWhich one of the following is favor able for an airplane operation? GATE- Aerospace1 AnswerFigure shows the schematic for the measurement of velocity of air -gate-mechanical-20111 AnswerA thin airfoil is mounted in a low-speed, subsonic wind tunnel, in which the Mach number is 0.1. At a point on the airfoil, the pressure coefficient is measured to be 1.2. If the flow velocity is increased such that the free-stream Mach number is 0.6, the pressure coefficient at the same point on the airfoil will approximately be: (GATE-Aerospace-Engineering-2018)1 AnswerWhich of the following statements is TRUE for the relation between discharge velocity and seepage velocity? - gate civil 2017 2 AnswerConsider a primary sedimentation tank (PST) in a water treatment plant with Surface Overflow Rate (SOR) of 40 m3 /m2 /d. The diameter of the spherical particle which will have 90 percent theoretical removal efficiency in this tank is _______________ m. Assume that settling velocity of the particles in water is described by Stokes’s Law. - gate civil 2017 1 AnswerA pumping device that combines the advantages of both centrifugal and reciprocating pumps is known as GATE-Agricultural Engineering-Question-20121 AnswerIn the Ekman flow limit, directions of ocean surface current and the geostrophic wind are1 AnswerIn the Ekman flow limit, directions of ocean surface current and the geostrophic wind are2 AnswerA (150 mm × 150 mm) square pillar is located in a river with water flowing at a velocity of 2 m/s, as shown in figure. The height of the pillar in water is 8 m. Take density of water as 1000 kg/m3 and kinematic viscosity as 1×106 m/s2. The coefficient of drag of the pillar is 2.0. The drag force exerted by water on the pillar in N is _______.0 AnswerT he geomorphic feature ‘horns’ are formed by1 AnswerA tractor power take-off (PTO) driven stationary peg tooth type wheat thresher operating at a cylinder speed of 540 rpm requires a torque of 250 Nm at PTO. GATE-Agricultural Engineering-Question-20121 AnswerW ith time, wind per double traverse in a drum-driven winder1 Answer
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