Description : The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be (A) 0.4 (B) 0.56 (C) 0.67 (D) 1.67
Last Answer : (A) 0.4
Description : Number of degree a complete circle represents is A. 90° B. 180° C. 270° D. 360°
Last Answer : 360°
Description : In vibration isolation system, if ω/ωn, then the phase difference between the transmitted force and the disturbing force is A 0° B 90° C 180° D 270°
Last Answer : C 180°
Description : In vibration isolation system, if ω/ω n > 1, then the phase difference between the transmitted force and the disturbing force is A. 0° B. 90° C. 180° D. 270°
Last Answer : C. 180°
Description : In vibration isolation system, if ω/ω n , then the phase difference between the transmitted force and the disturbing force is a) 0° b) 90° c) 180° d) 270°
Last Answer : c) 180°
Description : In vibration isolation system, if ω/ω n > 1, then the phase difference between the transmitted force and the disturbing force is a) 0° b) 90° c) 180° d) 270°
Description : Back bearing of a line is equal to (A) Fore bearing ± 90° (B) Fore bearing ± 180° (C) Fore bearing ± 360° (D) Fore bearing ± 270°
Last Answer : (B) Fore bearing ± 180°
Description : An angle of deflection right, may be directly obtained by setting the instrument to read (A) Zero on back station (B) 180° on back station (C) 90° (D) 270° on back station
Last Answer : (A) Zero on back station
Description : In an amplifier if conductor during the cycle is from 0 to 90° and again from 180° to 270°, the amplifier will be termed as A) Class A B) Class B C) Class C D) Class AB.
Last Answer : B) Class B
Description : ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is (A) 90° (B) 120° (C) 210° (D) 270°
Last Answer : (C) 210°
Description : Steam is regularly used for propulsion (as a driving force) in applications such as ________ turbines. • Gas turbine • Steam turbine • Water turbine
Last Answer : • Steam turbine
Description : The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades. (A) Inlet tip of a blade curves in a direction opposite to that (B) Outlet tip ... Inlet tip of a blade is towards the direction (D) Outlet tip of a blade is towards the direction
Last Answer : (D) Outlet tip of a blade is towards the direction
Description : In case of full journal bearing, the angle of contact of the bushing with the journal is (A) 60° (B) 90° (C) 180° (D) 360°
Last Answer : (D) 360°
Description : The H–C–H bond angle in ethylene is (a) 60° (b) 120° (c) 90° (d) 180°
Last Answer : 120°
Description : A -________ incorporates a firebox or furnace in order to burn the fuel and _________ heat. a. Boiler, generate b. Heat, boiler c. Steam, pressure d. None
Last Answer : a. Boiler, generate
Description : What is the value of included angle of a triangular notch for maximum discharge? (A) 30° (B) 60° (C) 90° (D) 120°
Last Answer : (C) 90°
Description : Pick out the wrong statement pertaining to the turbine agitator. (A) Recommended peripheral speed for the turbine agitator is 200-250 metres/minute (B) Pitched blade turbine agitator gives only radial flow with ... l/4th of agitator diameter (with central disc, it is l/8th of the agitator diameter)
Last Answer : (B) Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow
Description : Once the condensate reaches the _____ , it becomes available to the boiler for recycling. • Condenser • Turbine • Boiler • Generator
Last Answer : • Boiler
Description : Why single boiler unit per turbine is equipped commonly? • For better turbine control • To reduce the cost • For overcoming losses of power • To improve the efficiency
Last Answer : • For better turbine control
Description : The vector representing acceleration on a vector diagram for a harmonic motion A) Lags the displacement vector by 90° B) Lags the displacement vector by 180° C) Leads the displacement vector by 90° D) Leads the displacement vector by 180°
Last Answer : C) Leads the displacement vector by 90°
Description : The velocity vector in a vector diagram for a harmonic motion A) Lags the displacement vector by 180° B) Leads the displacement vector by 90° C) Lags the displacement vector by 90° D) Leads the displacement vector by 180°
Last Answer : B) Leads the displacement vector by 90°
Description : In two stroke engine one power occurs in _______ of crank rotation A. 180° B. 360° C. 270° D. 720°
Last Answer : ANSWER : B
Description : In case of partial bearing, the angle of contact of the bushing with the journal is (A) 270° (B) More than 180° (C) Less than 180° (D) 360°
Last Answer : (C) Less than 180°
Description : The sum of the three interior angles of a triangle, the vertices of which lie on the surface of the earth, covering a vast area of several hundreds of sq kms, is : (a) Less than 180° (b) Equal to 180° (c) More than 180° but not less than 270° (d) More than 180° but not more than 225°
Last Answer : (d) More than 180° but not more than 225°
Description : What is the main disadvantage of Lamont boiler ? a. Less flexible in design b. Low heat transfer rate c. Formation of bubbles d. Low steam generation capacity
Last Answer : c. Formation of bubbles
Description : Where is water steam separator drum located in Lamont boiler ? a. Inside of the boiler b. Right above the furnace c. Before the feed water pump d. Outside the boiler
Last Answer : d. Outside the boiler
Description : What type of steam is generated by evaporator tube of Lamont boiler ? a. Saturated steam b. Unsaturated steam c. Superheated steam d. Flash steam
Last Answer : a. Saturated steam
Description : Through what is feed water from hot-well is passed through, before entering steam and water drum in Lamont boiler? a. Evaporator tubes b. Economizer c. Distributor header d. Circulating pump
Last Answer : b. Economizer
Description : The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________ a) Foaming b) Priming c) Corrosion d) Caustic embrittlement
Last Answer : b) Priming
Description : In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is (A) 0.007 bar (B) 0.053 bar (C) 0.06 bar (D) 0.067 bar
Last Answer : (D) 0.067 bar
Description : The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure. (A) Equal to (B) Less than (C) Higher than (D) None of these
Last Answer : (B) Less than
Description : A safety valve usually employed with stationary boilers is (A) Lever safety valve (B) Dead weight safety valve (C) High steam and low water safety valve (D) All of these
Last Answer : (D) All of these
Description : If steam is pressurized _____ • It occupies more space • It occupies less space • Both are correct • None of the above
Last Answer : • It occupies less space
Description : When the bubbles of steam are produced? • Once the water reaches saturation temperature • Once the water starts evaporating • Once the temperature decreases • None of the above
Last Answer : • Once the water reaches saturation temperature
Description : Find the wrong statement. • Boiler is used to produce electricity in the energy business. • Boiler is used to produce steam for generating electricity. • Boiler can pressurize the water and can also evaporate it. All are wrong.
Last Answer : • Boiler can pressurize the water and can also evaporate it.
Description : A boiler or steam generator is a device used to create steam by applying heat energy to _____. • Water • Petrol • Oil • All of the above
Last Answer : • Water
Description : A steam and condensate system represents a _____ loop. • Discontinuous • Continuous • None of the above • All of the above
Last Answer : • Continuous
Description : ……… is excellent carrier of heat a) Water b) steam c) solid d) None of above
Last Answer : b) steam
Description : Direct relation between…….. &………of saturated steam, the amount of energy input to process easy to control. a) volume, pressure b) volume, temperature c) temperature, pressure d) None of above
Last Answer : c) temperature, pressure
Description : when steam is condensate volume is drastically……. a) reduces b) increase c) both a) & b) d) None of above
Last Answer : a) reduces
Description : Rankine cycle efficiency in a good steam power station may be in the range between........ a.15% - 20% b.35% - 40% c.50% - 60% d.90% - 95%
Last Answer : b.35% - 40%
Description : What kind of energy output is obtained from a ‘Steam Power Plant’? a. Heat energy b. Sound energy c. Electricity d. Thermal energy
Last Answer : c. Electricity
Description : A device known as a _______ is used to release condensate from the pipework whilst preventing the steam from escaping from the system. a. Steam traps b. Steam pipes c. Boiler nose d. Release valve
Last Answer : a. Steam traps
Description : What increase as steam pressure increase inside a boiler • Force • Density • Rate of steam conversion • Viscosity
Last Answer : • Density
Description : What is the temperature at which the steam boiler are capable to withstand • 200°C • 280°C • 540°C • 358°C
Last Answer : • 540°C
Description : What is the function of boiler? • To burn the fuel in a confined closed system With the supply of air • To generate steam in varying pressure • To generate steam at constant pressure • To produce flue gases by burning fuel at a given pressure
Last Answer : • To generate steam at constant pressure
Description : Steam Properties and Qualities: • they are capable of dividing and renewing themselves for long periods • they are unspecialized • they can give rise to specialized cell types. • All of above
Last Answer : • All of above
Description : Industrial boilers are closed vessels that use a fuel source or electricity to generate ________for industrial purposes. • Fuel Food • Steam
Last Answer : • Steam
Description : Steam Boilers is used in _________industries • Heating Requirement for Facility. • Steam for Batching. • Steam for Processing. • All of the above
Last Answer : • All of the above
Description : The generated heat is transferred to water to make ______ the process of boiling. • Steam • Boiler • Both • None