This set of Digital Electronics/Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Counters”. MCQ-Contemporary Marketing Research 1) Which form of data below can usually be obtained more quickly and at a lower cost than the others? Multiple Choice Questions and Answers on Control Systems. (B) a “wild flow” variable sets the gain of the controller a) The saturation voltage V CF of silicon transistor is more than germanium transistor. a) Primary b) Survey research c) Experimental research d) Secondary e) Observational research 2) Secondary data are _____. ELISA is a rapid test used for detecting or quantifying antibody (Ab) against viruses, bacteria and other materials or antigen (Ag). A pinoybix mcq, quiz and reviewers. DBMS MCQ Question with Answer Here you will find a list of common important questions on database management system in MCQ quiz style with answer for competitive exams and interviews. 190°C c. 390°C d. 250°C e. 160°C Answer: A In addition, reverse thrust is often necessary for maneuvering on the water, where it is used to make tight turns or even propel the aircraft in reverse, maneuvers which may prove necessary for leaving a dock or beach. (C) Dead time Development is basically random b. You can either use their software for a stand-alone SCADA scheme or use it with Honeywell’s PLC platform (e.g. 58. The engine does not run or rotate in reverse; instead, thrust reversing devices are used to block the blast and redirect it forward. a. [5], The cold stream system is known for structural integrity, reliability, and versatility. It includes multiple-choice questions on the applications of optical fiber cables, ... .. transmission system are widely used in the backbone of the network. The most important advantage of these cascading system is that refrigerants can be selected with the appropriate properties, avoiding the larger components of the system. In large industrial cascade refrigerating system is shown in Fig. (E) Feedforward. (E) the rate of one variable must remain fixed over time. [citation needed], The Douglas DC-8 series of airliners has been certified for in-flight reverse thrust since service entry in 1959. The cascade thrust reverser is commonly used on turbofan engines. A. Written examinations using multiple-choice questions (MCQ) are now widely used all over the world in medical education. the … (D) two controllers whose outputs are selected either by high or low value What is the name of this AI? Cascade and mixed refrigerant systems can be analysed. A directory of Objective Type Questions covering all the Computer Science subjects. Security concerns C. Too many platforms [8] Examples include the PAC P-750 XSTOL,[9] Cessna 208 Caravan, and Pilatus PC-6 Porter. Which of the following is the correct displacement diagram for a single acting cylinder, where 0 and 1 on the left hand side are initial and final positions of piston rod respectively and … Home / Computer Fundamentals / Operating System. In scenarios involving bad weather, where factors like snow or rain on the runway reduce the effectiveness of the brakes, and in emergencies like rejected takeoffs,[3] this need is more pronounced. Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's thrust so that it acts against the forward travel of the aircraft, providing deceleration. It also prevents the speed build-up normally associated with steep dives, allowing for rapid loss of altitude, which can be especially useful in hostile environments such as combat zones, and when making steep approaches to land. When a step-change in setpoint is applied to such a closed-loop system, the controlled variable with exhibit a. Overdamped response b. The extrinsic system is activated first, and then the intrinsic system is turned on later B. Did you know that 70% of all industrial temperature measurements are carried out with a PT100? (D) with greater filtering than the secondary If there are multiple recycle bin for a hard disk. During normal operation, the reverse thrust vanes are blocked. For forward thrust, these doors form the propelling nozzle of the engine. Take the Quiz for competitions and exams. The goal of knowledge management systems is to help knowledge workers create, organize, and make available important business knowledge, wherever and whenever it's needed in an organization. Safe and effective for facilitating quick descents at acceptable speeds, it nonetheless produced significant aircraft buffeting, so actual use was less common on passenger flights and more common on cargo and ferry flights, where passenger comfort is not a concern.[13]. The most important advantage of these cascading system is that refrigerants can be selected with the appropriate properties, avoiding the larger components of the system. A. Thrust reversal can also be used in flight to reduce airspeed, though this is not common with modern aircraft. Operating System MCQ (Multiple Choice Questions) with Definition and functions, OS Tutorial, Types of OS, Process Management Introduction, Attributes of a Process, CPU Scheduling, FCFS with overhead, FCFS Scheduling etc. 5 Widely-Used Financial Software Systems for Business 0. (D) equalize load and manipulated variable lags in a feedforward system d. 400 – 7000 nm Two separate cultures were started, one untreated and one inoculated with the virus. In large industrial cascade refrigerating system is shown in Fig. upsc gk questions in all languages. [citation needed], On aircraft using jet engines, thrust reversal is accomplished by causing the jet blast to flow forward. Cascade refrigeration systems commonly used in the liquefaction of natural gas and some other gases. (B) Cascade MCQs on transfer functions, inverse response, PID control, stability & frequency response ... d. two non-interacting first-order systems in series. Expensive personal computer hardware C. Expensive software upgrades D. All of the above Ans:D. 2. Cascade systems are the only open-air systems able to reach high cell densities (up to 10 g/L) and are suitable for repeated pumping-tolerating microalgae such as Chlorella and Scenedesmus. 700 – 1200 nm . (B) reduce the effect of load variation on the process variable Inst Tools covers topics of Industrial Instrumentation, PLC, DCS, SCADA, Field Instruments, Analyzers and so on. A similar technique was employed on a modified Tupolev Tu-154 which simulated the Russian Buran space shuttle. Adaptive gain is used for controlling processes. Airlines consider thrust reverser systems a vital part of reaching a maximum level of aircraft operating safety.[11]. Parliamentary systems. 1.1 Electro –Pneumatic Systems:- The most used pneumatic actuation systems are electrically controlled systems. 103. Too expensive B. [6] This system can redirect both the exhaust flow of the fan and of the core. The Boeing-manufactured aircraft is capable of in-flight deployment of reverse thrust on all four engines to facilitate steep tactical descents up to 15,000 ft/min (4,600 m/min) into combat environments (a descent rate of just over 170 mph, or 274 km/h). [1] The brakes of the landing gear of most modern aircraft are sufficient in normal circumstances to stop the aircraft by themselves, but for safety purposes, and to reduce the stress on the brakes,[2] another deceleration method is needed. The Hawker Siddeley Trident, a 120- to 180-seat airliner, was capable of descending at up to 10,000 ft/min (3,050 m/min) by use of reverse thrust, though this capability was rarely used. On the other hand, large aircraft (those weighing more than 12,500 lb) almost always have the ability to reverse thrust. d. 400 – 7000 nm This paper describes various system design solutions for cascade systems. This highly turbulent regime allows the existence of very thin culture layers (<2 cm), which provide higher … However, most commercial jet engines continue to produce thrust in the forward direction, even when idle, acting against the deceleration of the aircraft. A. (this multiple choice question has been scrambled) All of the following are true of cell communication systems except: A. in response to a signal, the cell may alter activites by changes in cytosol activity or in transcription of RNA Thrust reverser systems are featured on many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing distances. Both cultures were incubated under identical conditions. [citation needed], The Boeing C-17 Globemaster III is one of the few modern aircraft that uses reverse thrust in flight. (E) Integrating. a. Operating System MCQ (Multiple Choice Questions) with Definition and functions, OS Tutorial, Types of OS, Process Management Introduction, Attributes of a Process, CPU Scheduling, FCFS with overhead, FCFS Scheduling etc. This is new Multiple Choice Questions (MCQ Questions) with Answer on the Category of Database Management System (DBMS).In this Question set you will get 10 Objective Questions with Answer related to DBMS (Database Management System).Four options are given to the each question and only one options is the correct one. Which of the following statement is true? Which of the following is used in B2B to pay for purchases? This reverse thrust feature became available with the development of controllable-pitch propellers, which change the angle of the propeller blades to make efficient use of engine power over a wide range of conditions. Infrared range for fiber optics . Chaotic maps are widely used in different applications. This website uses cookies to improve your experience. to connect Virtual Hubs UEM console. Home DBMS Mcqs Servers which is widely used in relational database systems. (E) Steam flow, drum level, and feedwater flow. (A) one variable is controlled in proportion to another c. 300 – 2000 nm . Multiple Choice questions for Process Control asked in GATE exam. Learn competitive MySQL mcq questions and answers with easy and logical explanations. (B) Time-variant. [1], In addition to the two types used on turbojet and low-bypass turbofan engines, a third type of thrust reverser is found on some high-bypass turbofan engines. Culture suspension flows throughout a sloping surface in which turbulence is generated by gravity [78,79]. It allows for rapid deceleration, enabling quick changes of speed. (D) Cascade VFD Multiple Choice Questions :-1) VFD stands for what? We'll assume you're ok with this, but you can opt-out if you wish. Most commercial jetliners have such devices, and it also has applications in military aviation.[5]. Learn vocabulary, terms, and more with flashcards, games, and other study tools. In-flight deployment of reverse thrust has directly contributed to the crashes of several transport-type aircraft: A target-type thrust reverser being deployed, Thrust reversal-related accidents and incidents, FAA: Airplane Flying Handbook (FAA-H-8083-3B) Chapter 14: Transition to Turbopropeller-Powered Airplanes, Congonhas-São Paulo International Airport, https://www.boldmethod.com/blog/expressjet/how-to-handle-an-engine-failure-on-takeoff-v1-in-a-jet/, https://www.aopa.org/news-and-media/all-news/2017/march/pilot/turbine-reverse-thrust, https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950022395.pdf, "What It's Like To Fly America's Biggest Jet, The Gargantuan C-5 Galaxy", "Accident Database: Accident Synopsis 02091982", Cockpit Fight Reported on Jet That Crashed in Tokyo, "Power Jets thrust spoiler which can give negative thrust for braking", Electronic centralised aircraft monitor (ECAM), Electronic flight instrument system (EFIS), Engine-indicating and crew-alerting system (EICAS), Full Authority Digital Engine/Electronics (FADEC), https://en.wikipedia.org/w/index.php?title=Thrust_reversal&oldid=1000389374, Articles with unsourced statements from July 2013, Articles with unsourced statements from January 2010, Articles with self-published sources from February 2020, Creative Commons Attribution-ShareAlike License, On 29 August 1990, a United States Air Force, This page was last edited on 14 January 2021, at 22:10. Small aircraft typically do not have thrust reversal systems, except in specialized applications. (C) overcome dead time by duplicating the process lags on the setpoint signal the … a. Motivated by the cascade structure in electronic circuits, this paper introduces a general chaotic framework called the cascade chaotic system (CCS). [2][self-published source?] 3) The Vapor Side of a system is the. When reverse thrust is used to push an aircraft back from the gate, the maneuver is called a powerback. (C) Turbidity, feedwater flow, and temperature (A) Nonlinear. Transistor amplifier may be connected in any of the three configurations namely common emitter (CE), common base (CB) and common collector (CC).However, in cascade amplifier meant for providing high gain, only CE amplifier stage are connected in cascade. A. used to run the business in real time and is based on historical data. (E) the presence of a “lead/lag” relay or function block. (E) compensate for dead time and lag time in a process. (B) Time-variant You can use upsc gk android and windows app, it’s free app. There have been accidents involving thrust reversal systems, including fatal ones. Measurement of sub-zero Celcius temperature in industry is done most commonly by. C. used to support decision making and is based on current data. This activity contains 10 questions. a. ... A. B. used to run the business in real time and is based on current data. [4], A simple and effective method is to reverse the direction of the exhaust stream of the jet engine and use the power of the engine itself to decelerate. Corporate data centers B. a. Protein C C. TFPI Catheterization procedures are commonly used to observe a disease or treat a disease/condition in blood vessels or in the heart. 1 and 2 are correct c. 2 and 3 are correct d. All the four are correct Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8. 400 – 700 nm . Infrared range for fiber optics . Two-Stage Compression Cascade Refrigeration System (CCRS) STCRS is a traditional refrigeration system, which is widely used in air-conditioning systems. 11. They are also a big player in the SCADA market, providing a software platform for programming SCADA and HMI software systems. 8. Cascade refrigeration systems commonly used in the liquefaction of natural gas and some other gases. Reverse thrust is also available on many propeller-driven aircraft through reversing the controllable-pitch propellers to a negative angle. For maximum effectiveness, it should be applied quickly after touchdown. 1, 2 and 3 are correct b. ELISA is so named because the test technique involves the use of an enzyme system and immunosorbent. Select your option and check with given correct answer. (C) Model predictive Product layout is preferably used for: a) Repetitive processing b) Intermittent processing c) Both (a) and (b) d) Neither (a) nor (b) 11. upsc gk in hindi is easy to understand. b) The saturation voltage V CE for germanium transistor is more than silicon transistor. Some manufacturers warn against the use of this procedure during icy conditions as using reverse thrust on snow- or slush-covered ground can cause slush, water, and runway deicers to become airborne and adhere to wing surfaces. (E) after the secondary is tuned, (A) Ratio 1000 megabits per second c. 1.544 megabits per second d. 5.6 megabits per second. Reverse thrust is always selected manually, either using levers attached to the thrust levers or moving the thrust levers into a reverse thrust 'gate'. From the results, we conclude that the new rating scales were a better challenge and could be adapted to assess student knowledge and confidence in more depth than previous multiple-choice questions. 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