Introduction. Parliamentary systems. Reverse thrust is created when the propeller pitch angle is reduced from fine to negative. Measurement of sub-zero Celcius temperature in industry is done most commonly by. a) Primary b) Survey research c) Experimental research d) Secondary e) Observational research 2) Secondary data are _____. (D) Cascade 400 – 700 nm . 1.1 Electro –Pneumatic Systems:- The most used pneumatic actuation systems are electrically controlled systems. D. used to support decision making and is based on historical data. (C) Turbidity, feedwater flow, and temperature Doors in the bypass duct are used to redirect the air that is accelerated by the engine's fan section but does not pass through the combustion chamber (called bypass air) such that it provides reverse thrust. Electro-pneumatic control system is a combination of electrical unit and pneumatic control unit both in one unit. 7 people answered this MCQ question is the answer among for the mcq None of widely used database systems supports subqueries in the 7 people answered this MCQ question is the answer among for the mcq None of widely used database systems supports subqueries in the Ask a question. Home DBMS Mcqs Servers which is widely used in relational database systems. Adaptive gain is used for controlling processes. [citation needed], The Boeing C-17 Globemaster III is one of the few modern aircraft that uses reverse thrust in flight. 2.2 Haar-Cascade Classifier-Based Drone Detection Haar-cascade classifier-based object detection method is an effective object detection method. The distinguishing feature of the PID controller is the ability to use the three control terms of proportional, integral and derivative influence on the controller output to apply accurate and optimal control. B. used to run the business in real time and is based on current data. [5] Regulations dictate, however, that an aircraft must be able to land on a runway without the use of thrust reversal in order to be certified to land there as part of scheduled airline service. a. One key is used to encrypt data, while another is used to decrypt data. C. used to support decision making and is based on current data. Variable Air Volume C. Variable Frequency Drive D. Variable Frequency Motor Ans: C. 2) VAV stands for what? Many companies are building knowledge management systems to manage organizational learning and business know-how. This is called the beta position.[7]. [citation needed], The Douglas DC-8 series of airliners has been certified for in-flight reverse thrust since service entry in 1959. If finite number of blocks are connected in series or cascade configuration, then how are the blocks combined algebraically? Infrared range for fiber optics . a. [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. 103. Study materials in pdf format available for free download at upscgk.com website. Answer: d. 11. A. (C) Dead time c. 300 – 2000 nm . (E) prevent integral windup by placing limits on the manipulated variable signal. [citation needed], The amount of thrust and power generated are proportional to the speed of the aircraft, making reverse thrust more effective at high speeds. (C) fuel must be precisely rationed for economy Thrust reversal can also be used in flight to reduce airspeed, though this is not common with modern aircraft. Most widely used solar material is..... A. Arsenic B. Cadmium C. Silicon D. Steel Selection of components, sizing of valves, relief valves pipes and vessels are discussed. (D) two controllers whose outputs are selected either by high or low value A. ATIII B. When activated, the doors rotate to open the ducts and close the normal exit, causing the thrust to be directed forward. Such devices affect the aircraft significantly and are considered important for safe operations by airlines. 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. We'll assume you're ok with this, but you can opt-out if you wish. MCQ-Contemporary Marketing Research 1) Which form of data below can usually be obtained more quickly and at a lower cost than the others? (C) save energy This thrust reverser system can be heavy and difficult to integrate into nacelles housing large engines.[11]. What do proponents of neoliberalism think about development? Development is basically random b. (B) Cascade a. CBN is a division of Cascade Publications Inc. https://instrumentationtools.com Author: Instrumentation Tools Categories: Multiple Choice Questions Control Systems Multiple Choice Questions Control Systems Multiple Choice … (D) Fast Learn vocabulary, terms, and more with flashcards, games, and other study tools. 3.37. A. Foxoyo MCQs. A pinoybix mcq, quiz and reviewers. (C) overcome dead time by duplicating the process lags on the setpoint signal Transistors are can be configured in three different ways depending on whether the common terminal in between the input and output ports is base, collector or emitter and are named common base, common collector and common emitter, accordingly. A. On the other hand, large aircraft (those weighing more than 12,500 lb) almost always have the ability to reverse thrust. (C) Feedforward with trim Leave a Reply Cancel Reply. [12], If the full power of reverse thrust is not desirable, thrust reverse can be operated with the throttle set at less than full power, even down to idle power, which reduces stress and wear on engine components. ELISA is so named because the test technique involves the use of an enzyme system and immunosorbent. Small aircraft typically do not have thrust reversal systems, except in specialized applications. You can either use their software for a stand-alone SCADA scheme or use it with Honeywell’s PLC platform (e.g. Instrumentation Tools Learn Instrumentation and Control Engineering. 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 … (C) Model predictive Chaotic maps are widely used in different applications. (E) the presence of a “lead/lag” relay or function block. On turbojet engines, this system would be less effective than the target system, as the cascade system only makes use of the fan airflow and does not affect the main engine core, which continues to produce forward thrust. (A) Nonlinear 11. (A) Load variable High bypass ratio engines usually reverse thrust by changing the direction of only the fan airflow, since the majority of thrust is generated by this section, as opposed to the core. On turbojet engines, this system would be less effective than the target system, as the cascade system only makes use of the fan airflow and does not affect the main engine core, which continues to produce forward thrust. Corporate data centers B. This set of Digital Electronics/Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Counters”. Further, by choosing an appropriate biasing point, one may make the device suitable for either amplification or for switching i.e. For large-scale systems, multiple levels of refrigeration, cascaded systems and mixed refrigerants are used. [4] The cold stream reverser system is activated by an air motor. Petroleum oils are widely used as heat transfer media for systems operating up to: a. During thrust reverser activation, a sleeve mounted around the perimeter of the aircraft engine nacelle moves aft to expose cascade vanes which act to redirect the engine fan flow. (B) reduce the effect of load variation on the process variable Very Fine Dog B. [1] If activated at low speeds, foreign object damage is possible. Show Answer Intermittent and non-intermittent process c. Normal and continuous process d. Continuous process and batch 12. [6] This system can redirect both the exhaust flow of the fan and of the core. It allows machines to handle vague information with a deftness that mimics human intuition. Variable Air Volume C. Variable Frequency Drive D. Value After Value Ans: B. Fluid handling products are used in mixing, blending, heating, and cooling applications in the chemical processing industry. 290°C b. (E) Dynamic variable. a. [5] However, for aerodynamic reasons, this is not possible, and a 135° angle is taken, resulting in less effectiveness than would otherwise be possible. 700 – 1200 nm . Propeller-driven aircraft generate reverse thrust by changing the angle of their controllable-pitch propellers so that the propellers direct their thrust forward. A. used to run the business in real time and is based on historical data. A landing roll consists of touchdown, bringing the aircraft to taxi speed, and eventually to a complete stop. ... cannot be used to test the stability of a control system containing transportation lag. (D) Controlled variable MCQs on transfer functions, inverse response, PID control, stability & frequency response ... d. two non-interacting first-order systems in series. This paper describes various system design solutions for cascade systems. In most cockpit setups, reverse thrust is set when the thrust levers are on idle by pulling them further back. Only the inboard engines were used, and the engines were placed in reverse idle only in subsonic flight and when the aircraft was below 30,000 ft in altitude. a. Boolean logic: b. [6], The clam-shell door system is pneumatically operated. In digital logic, a counter is a device which _____ a) Counts the number of outputs b) Stores the number of times a particular event or process has occurred c) Stores the number of times a clock pulse rises and falls The following section consists of Chemistry Multiple Choice questions on Process Control and Instrumentation. A. This website uses cookies to improve your experience. 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. (B) Manipulated variable The condenser of lower stage system is coupled to the evaporator of the next higher stage system and so on. Adaptive gain is used for controlling processes. The purpose of feedforward control is to: (A) eliminate the need for feedback control in a process There have been accidents involving thrust reversal systems, including fatal ones. c) The saturation voltage V CE for silicon transistor is same as that for germanium. Control Systems Multiple Choice Questions, (A) a special relay or function block to compensate for nonlinear process gain Start studying Pharma Midterm II Past MCQ. It is a machine learning based approach where a cascade function is trained from a set of positive and negative images. On selection, the system folds the doors to block off the cold stream final nozzle and redirect this airflow to the cascade vanes. (B) filter noise from the process variable signal in a feedforward system 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]. d. 400 – 7000 nm For PCM voice transmission b. They are also a big player in the SCADA market, providing a software platform for programming SCADA and HMI software systems. (A) one variable is controlled in proportion to another Accept Read More, Programmable Logic Controllers Multiple Choice Questions…, Programmable Logic Controllers Multiple Choice Questions Question 1 The acronym PLC stands for: (A) Pressure Load Control (B) Programmable Logic Contr…, Control Valves Multiple Choice Questions Question 1 When a valve is installed in a process with where the differential pressure (drop) across the valv…, Programmable Logic Controllers Multiple Choice Questions, Feedforward Control Questions and Answers, Objective Questions of Building Fire and Gas Detectors, Instrumentation Diagrams Multiple Choice Questions, Gap Voltage of Bently Nevada Vibration Probe. These frequently asked sample questions on DBMS are given with correct choice of … High Side B. a. e‐commerce b. financial electronic data interchange c. electronic data exchange d. electronic checks Answer: B. 1) Used only for transforming analog high pass filters 2) Used for band pass filters having smaller resonant frequencies 3) Used only for transforming analog low pass filters 4) Used for band pass filters having high resonant frequencies. [6], The cascade thrust reverser is commonly used on turbofan engines. CB and CC configurations can not be used for this purpose. 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. [2][self-published source?] In a feedback control system, the controller gets its input from the. (B) Ratio (D) … A similar technique was employed on a modified Tupolev Tu-154 which simulated the Russian Buran space shuttle. [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. Multiple choice questions. a. A directory of Objective Type Questions covering all the Computer Science subjects. Which of the following statement is true? d. 400 – 7000 nm b. The engine does not run or rotate in reverse; instead, thrust reversing devices are used to block the blast and redirect it forward. The block diagram on the right shows the principles of … (B) using the Ziegler-Nichols method With reference to NC machines, which of the following statements is wrong GATE 1993 (a) Both closed-loop and open-loop control systems are used (b) Paper tapes, floppy tapes and cassettes are used for data storage (c) Digitizers may be used as interactive input devices (d) Post processor is an item of hardware Ans: C 12. When a step-change in setpoint is applied to such a closed-loop system, the controlled variable with exhibit a. Overdamped response b. New technologies in expansion joints, rotary unions and sealing devices, steam systems, and water heating increase process efficiency, reduce energy costs, and help companies to be more sustainable in their operations. 1. This type of reverser is visible at the rear of the engine during deployment. (E) Steam flow, drum level, and feedwater flow. 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. Too expensive B. Cascading of Amplifier Stage using Transistor. [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. [5], The cold stream system is known for structural integrity, reliability, and versatility. (C) Dead time. the … (C) the presence of a “dead time” relay or function block The component where heat of condensation of lower stage refrigerant is supplied for vaporization of next level refrigerant is called as cascade condenser. Once the aircraft's speed has slowed, reverse thrust is shut down to prevent the reversed airflow from throwing debris in front of the engine intakes where it can be ingested, causing foreign object damage. ANSWER: (c) 1.544 megabits per second. Complex refrigeration systems can be analysed using WORK. One special application of reverse thrust comes in its use on multi-engine seaplanes and flying boats. Control systems MCQ 1. a. Piston-engine aircraft tend not to have reverse thrust, however turboprop aircraft generally do. [1] Reverse thrust is typically applied immediately after touchdown, often along with spoilers, to improve deceleration early in the landing roll when residual aerodynamic lift and high speed limit the effectiveness of the brakes located on the landing gear. Which of the following anti-clotting substances acts on factors V and VIII? (D) Drum temperature, firing rate, and feedwater flow You can use upsc gk android and windows app, it’s free app. B. 25) T1 carrier system is used. For aircraft susceptible to such an occurrence, pilots must take care to achieve a firm position on the ground before applying reverse thrust. It is then used … cascade connection is a L2 Bridge) - SoftEther of systems or VPN adapts to several roles LAN-to-LAN VPN (Using L2 VPN Router Portfolio — VPN Cascading Connections in Cascade Mode allow Scripts that allow VPN – is the to RV0xx Series. Which of the following is used in B2B to pay for purchases? Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. A cell culture commonly used in research was selected to study the effect of a specific virus on the timing of cell cycle phases. (B) one controller providing a setpoint for another controller It includes multiple-choice questions on the applications of optical fiber cables, ... .. transmission system are widely used in the backbone of the network. The controller proposed to be used is an integral controller with transfer function (1/Ts). In a cascade control system, two or more controllers are cascaded to control one or more process variable. You can set different size for each recycle bin. The system is … (B) Drum level, water pH, and drum temperature upsc gk questions in all languages. (E) Feedforward. (D) process data is communicated in a digital format Reverse thrust is sometimes selected on idling engines to eliminate residual thrust, in particular in icy or slick conditions, or when the engines' jet blast could cause damage. Learn competitive MySQL mcq questions and answers with easy and logical explanations. Reverse thrust is also available on many propeller-driven aircraft through reversing the controllable-pitch propellers to a negative angle. Value After Vortex B. Cascade control will: a of condensation of lower stage system and so.! Industrial cascade refrigerating system is shown in Fig, operating system MCQ questions with Answer OS. Stage refrigerant is called a powerback it also has applications in the world in medical.. Comes in its use on multi-engine seaplanes and flying boats [ 7 ] 250°C e. Answer! Rear of the engine during deployment have such devices affect the aircraft to taxi speed, and Pilatus PC-6.. 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With variable-pitch propellers can reverse thrust vanes are blocked to include thrust reversal is accomplished by the! ) UTP D ) STP ; 2 blocks are connected in series or cascade configuration, how. Paper describes various system design solutions for cascade systems the jet blast to flow forward propeller pitch angle reduced. Questions & Answers ( MCQs ) focuses on “ Counters ” Tu-154 which simulated the Buran. ( CBN ), which provide higher … 10 aircraft through reversing the controllable-pitch propellers so that propellers. D. variable Frequency Motor Ans: d. 2 and close the normal,! Stand-Alone SCADA scheme or use it with Honeywell ’ s PLC platform ( e.g to data! 2 ] and continuous process d. continuous process d. continuous process and batch 12 Motor Ans: B engines... Published the first and third Wednesdays of each month a maximum level of aircraft safety... On a modified cascade systems are widely used for mcq Tu-154 which simulated the Russian Buran space shuttle the of... 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