Description : Consider the following types of turbines: 1. Francis 2. Pelton with a single jet 3. Kaplan The correct sequence of these turbines in increasing order of their specific speeds is (a) 1, 3 & 2 (b) 2, 1 & 3 (c) 1, 2 & 3 (d) 2, 3 & 1
Last Answer : (b) 2, 1 & 3
Description : Two Pelton turbines A and B have the same specific speed and are working under the same head. Turbine A produces 400 kW at 1000 rpm. If turbine B produces 100kW, then its rpm is (a) 4000 (b) 2000 (c) 1500 (d) 3000
Last Answer : (b) 2000
Description : Kaplan turbines are used whenever the water head is (a) low (b) high (c) medium (d) (b) and (c)
Last Answer : Low head upto 50 m
Description : Draw and explain performance and operating characteristics curves of a Pelton turbine
Last Answer : The followings are the important characteristic curves of a turbine : Main Characteristic Curves or Constant Head Curve. ... The speed of the turbine is varied by changing load on the turbine. For each value ... through the turbine as the load varies. Head may or may not kept constant.
Description : With a neat diagram explain pelton wheel turbine.
Last Answer : Diagram of Pelton Wheel:- Construction of Pelton Wheel Turbine: 1. Runner with Bucket: The runner of a pelton turbine consists of a number of double cupped buckets surrounded ... necessary to avoid accidents, splashing race and to support the housing for the bearing and the nozzle.
Description : Why does Francis fix and maintain wind turbines. Francis works with?
Last Answer : Feel Free to Answer
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 : Consider efficiencies of hydro-turbines and generators. If the efficiency of a hydro-turbine is 80% and the efficiency of a generator is 90%, what is the overall efficiency of the unit? w) 85% x) 72% y) 90% z) 70%
Last Answer : ANSWER: X -- 72%
Description : For attaining maximum efficiency, a Francis turbine runner is so designed as to result in radial discharge at exit. This is done by : a) Providing runner vane angle at inlet as 90o b) Providing ... 90o d) Designing for absolute velocity at outlet to be inclined at 90o to direction of vane there
Last Answer : d) Designing for absolute velocity at outlet to be inclined at 90o to direction of vane there
Description : Explain Construction and working of Francis Turbine with neat sketch.
Last Answer : The main parts of the Francis turbine are: 1) Penstock: It is the large pipe which conveys water from the upstream of the reservoir to the turbine runner. 2) Spiral casing: It is a closed passage ... After doing the work the water is discharge to the trail race through the draft tubes.
Description : Francis turbine
Last Answer : Francis turbine In Francis Turbine water flow is radial into the turbine and exits the Turbine axially. Water pressure decreases as it passes through the turbine imparting reaction on the turbine blades making ... imparts reaction on the runner and power is transferred to the turbine shaft.
Description : Explain reaction turbine in terms of head:
Last Answer : High head- Francis Medium head- Propeller Low head- Kaplan
Description : Who is agent pelton in the book Zach and lie?
Last Answer : Need answer
Description : Francis Crick’s seminal concept that in nature genetic information generally flows from DNA to RNA to protein.
Last Answer : Ans. Central Dogma
Description : The purpose of a surge tank is (A) To control the pressure variations due to rapid changes in the pipe line flow (B) To eliminate water hammer possibilities (C) To regulate flow of water to turbines by providing necessary retarding head of water (D) All of the above
Last Answer : Answer: Option D
Description : Why do cylindrical Alternators operate with steam turbines?
Last Answer : A: Steam turbines are found to operate at fairly good efficiency only at high speeds. The high speed operation of rotors tends to increase mechanical losses and so the rotors should have a ... axial length are used for Synchronous generators driven by steam turbines with either 2 or 4 poles.
Description : For high head and low discharge, the water turbine used is
Last Answer : For high head and low discharge, the water turbine used is Pelton wheel
Last Answer : Turbine used for low head is Kaplan turbine.
Description : In the illustration, moving the engine room reference in the direction indicated will _________. SE-0002 A. cause a positive signal to be sent to the ahead function generator creating a more ... the ahead valve to open until the negative signal exceeds the low lube oil pressure override signal
Last Answer : Answer: A
Description : have you graduated from kaplan university?
Last Answer : I would imagine that going to a more established university, even online, would lend your degree more credence. People are skeptical of places like Kaplan University and a different school with a “name” that is well-respected would probably be better.
Description : What is kaplan university EIN ku campus?
Last Answer : What is the answer ?
Description : What is the address for kaplan university?
Description : is kaplan college accredited?
Last Answer : Yes, Kaplan is accredited through the Accrediting Council for Indpendent Colleges and Schools (ACICS), the Accrediting Commission of Career Schools and Colleges of Technology (ACCSCT), and The Higher Learning Commission (HLC).
Description : Can I receive a Nutrition Science Degree from Kaplan University?
Last Answer : Yes, Kaplan University does offer a Nutrition Science Degree. You can earn either a bachelor of science degree in nutrition science or a masters of health care administration or public health.
Description : is kaplan good for LSAT prep courses?
Last Answer : Kaplan is a good study source but can be pricey and its curriculum doesn't always mesh well with todays students. If you would like more information check out http://talk.collegeconfidential.com/ ... -kaplan-lsat-course-harmful.html or talk to your local school because their courses may be cheaper
Description : Does Kaplan offer GRE test prep classes?
Last Answer : The GRE test prep classes are available with Kaplan. They provide personalized training and show proven track records for those who use their test preparations. A great benefit with goig with Kaplan is that they offer a money back gurantee if you do not receive a high score.
Description : Low head power plants generally use: (A) Pelton Wheel Turbine (B) Francis Turbine (C) Combination of Pelton Wheel and Francis Turbines (D) Kaplan Turbines
Last Answer : Low head power plants generally use: Pelton Wheel Turbine
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 : The net head under which the turbine reaches its peak efficiency at synchronous speed is called (A) Design head (B) Rated head (C) Gross head (D) Operating head
Last Answer : Answer: Option A
Description : Assume that water vaporizes at an absolute pressure of 1.5 m, barometric pressure head is 9.5 m and cavitation coefficient is 0.1 A turbine operates under a head of 40 m. the safe height of the runner above the tail water level, in meters, is : a) 6 b) 4 c) 3 d) 2
Last Answer : b) 4
Description : Which power plant has minimum operating cost? a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Gas Turbine Power Plant Ans: A 42. Which of the following have ... a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Solar electric power plant
Last Answer : Ans: B
Description : As a result of a mechanical malfunction in one of the ship's service generators operating in parallel, you must secure that generator. In order to prevent a possible overload to the ... feeder circuit breakers, the malfunctioning prime mover turbine throttle trip, and the generator circuit breaker.
Last Answer : Answer: B
Description : The propeller shaft speed in a turbo-electric, synchronous, propulsion drive motor is changed by varying the __________. A. turbine speed B. number of motor poles C. field strength of the generator D. field strength of the motor
Description : Turbine-Generator Lubrication Oil System Function
Last Answer : Turbine-Generator Lubrication Oil System Function For large turbine-generators forced lubrication system and water cooling system should be continuously required during the operation of the turbine-generator and ... when the oil pressure is low. A second backup dc pumps are sometimes provided.
Description : State the factors, for the choice of electrical system for an aero turbine.
Last Answer : A:The choice of electrical system for an aero turbine is guided by three factors: Type of electrical output: dc, variable- frequency ac, and constant- frequency ac. Aero turbine ... energy output: in conjunction with battery or other form of storage, or interconnection with power grid.
Description : What are the working fluids in gas turbine?
Last Answer : 1.Air 2.Helium 3.Argon 4.Carbon dioxide
Description : What is the purpose of TOPP (turbine oil purification plant)?
Last Answer : The purpose of TOPP is to remove the water ingress in turbine oil system from the gland leaks, cooler leakage, and solid metal particles, which are produced due to rust, wear of bearings and to normalize the ... capacity of TOPP is, for solids - 5 microns and for water - 300 to 500 parts per milli.
Description : State turbine governor setting.
Last Answer : On 2560 rpm turbine governor becomes effective and on 2760 rpm is turbine governor take over speed.
Description : What is the type turbine installed in KGS?
Last Answer : Tandem compounded to expansion of steam, impulse reaction type.
Description : What type of governing system used in turbine and what are the purposes of the system?
Last Answer : Hydraulic governing system of centrifugal (speed) governer type is adopted in turbine. Sensitive oil pressure to actuate centrifugal governer is 6.1 kg/cm2 (max). At 6.7 kg/cm2 relief valve ... speeder gear from BPC signal. Once synchronised the grid frequency and speeder gear controls the speed.
Description : Write critical speeds of turbine generator?
Last Answer : Generator rotor 1st critical speed 1283 rpm 2nd critical speed 3600 rpm Combined turbine generator 1st critical speed 1938 rpm 2nd critical speed 2120 rpm 3rd critical speed 2385 rpm 4th critical speed 2837 rpm
Description : What are the futures of turbine generator?
Last Answer : a. Low heat drop b. Moisture control (HP-0.26%, LP-3%.) c. Turbine governing system d. 70% steam dumping to the condenser to avoid reactor trip. e. Gland sealing f. LP exhaust hood cooling g. Generator stator and rotor cooling h. Hydrogen sealing i. Static excitation
Description : How shaft voltage produced by turbine?
Last Answer : Due to un-symmetry in the flux path of core, non-uniform air gap, un-symmetry in the rotor magnetic field during short circuit in the rotor winding, causes voltage to develop across the ends of rotor shaft.
Description : How dearator pressure is maintained after turbine trip?
Last Answer : Pegging steam is used to maintain dearator pressure after turbine trip.
Description : How turbine oil purification is achieved?
Last Answer : Oil purification is achieved by centrifugal operation.
Description : Explain the main difference between impulse and reaction turbine.
Last Answer : When the inlet pressure of steam to the turbine is equal to outlet pressure of steam from the turbine the turbine is called the impulse turbine. In this type the heat is added is very less. ... than the inlet pressure of the steam. There is reduction in pressure with the increase in kinetic energy.
Description : What is the purpose of turbine governing system?
Last Answer : Turbine governing system governs the speed of the turbine with the help of centrifugal governer. It reduces the steam inlet when turbine over speeds.
Description : What are the methods of removing moisture from turbine?
Last Answer : a. External method by moisture separator and reheater, which separates the moisture and reheates the steam. b. Internally by stainless steel mesh, which reduces moisture (water particles) to 1%. c. By main steam reheat.
Description : Explain the principle of working of impulse steam turbine.
Last Answer : When steam enters the turbine it suffers a change in direction and momentum, which gives rise to the rotation of the turbine. There will be no drop in pressure in impulse steam turbine.
Last Answer : The choice of electrical system for an aero turbine is guided by three factors: Type of electrical output: dc, variablefrequency ac, and constant- frequency ac. Aero turbine rotational speed ... output: in conjunction with battery or other form of storage, or interconnection with power grid.