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 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. 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. Variable Air Volume C. Variable Frequency Drive D. Value After Value Ans: B. In large industrial cascade refrigerating system is shown in Fig. A cell culture commonly used in research was selected to study the effect of a specific virus on the timing of cell cycle phases. In a cascade control system, two or more controllers are cascaded to control one or more process variable. 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) Fiber optic B) Co-axial C) UTP D) STP; 2. Multicylinder Pneumatic Circuits & Electropneumatics – MCQs with Answers 1. Written examinations using multiple-choice questions (MCQ) are now widely used all over the world in medical education. Servers which is widely used in relational database systems. Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8. The early deceleration provided by reverse thrust can reduce landing roll by a quarter or more. (C) overcome dead time by duplicating the process lags on the setpoint signal Chaotic maps are widely used in different applications. 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. Multiple Choice Question (MCQ) of Electronics page-17:241. What is the number one concern about cloud computing? Ideally, the reversed exhaust stream would be directed straight forward. In most cockpit setups, reverse thrust is set when the thrust levers are on idle by pulling them further back. Block diagram is used for analysis & design of control system. d. 400 – 7000 nm A. This type of reverser is visible at the rear of the engine during deployment. Learn vocabulary, terms, and more with flashcards, games, and other study tools. For aircraft susceptible to such an occurrence, pilots must take care to achieve a firm position on the ground before applying reverse thrust. A pinoybix mcq, quiz and reviewers. Lead/lag compensation, sometimes called “dynamic compensation,” is commonly used to: (A) improve stability by changing controller gain over time (B) a “wild flow” variable sets the gain of the controller Inst Tools covers topics of Industrial Instrumentation, PLC, DCS, SCADA, Field Instruments, Analyzers and so on. Both cultures were incubated under identical conditions. The first widely-used commercial form of Artificial Intelligence (Al) is being used in many popular products like microwave ovens, automobiles and plug in circuit boards for desktop PCs. The PT100 is one of the most widely used temperature sensors in the world. Question is ⇒ Assertion (A): Master slave JK flip flop is commonly used in high speed synchronous circuitry Reason (R): Master slave JK flip flop uses two JK flip flops in cascade. CBN is published the first and third Wednesdays of each month.  However, for aerodynamic reasons, this is not possible, and a 135° angle is taken, resulting in less effectiveness than would otherwise be possible. 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. 103. In a cascade system a series of refrigerants with progressively lower boiling points are used in a series of single stage units. The extrinsic system is activated first, and then the intrinsic system is turned on later B. b. 3.37. 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.. Take the Quiz for competitions and exams.  This system can redirect both the exhaust flow of the fan and of the core. C. used to support decision making and is based on current data. The Shuttle Training Aircraft, a highly modified Grumman Gulfstream II, used reverse thrust in flight to help simulate Space Shuttle aerodynamics so astronauts could practice landings. Most commercial jetliners have such devices, and it also has applications in military aviation.. A. For large-scale systems, multiple levels of refrigeration, cascaded systems and mixed refrigerants are used. Motivated by the cascade structure in electronic circuits, this paper introduces a general chaotic framework called the cascade chaotic system (CCS). , The cold stream system is known for structural integrity, reliability, and versatility. Automated and manual b. (D) with greater filtering than the secondary (A) Nonlinear. (B) using the Ziegler-Nichols method Thrust reversal can also be used in flight to reduce airspeed, though this is not common with modern aircraft. The block diagram on the right shows the principles of … 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. Parliamentary systems. Show Answer D. used to support decision making and is based on historical data. (A) one variable is controlled in proportion to another Electro-pneumatic control system is a combination of electrical unit and pneumatic control unit both in one unit. 400 – 700 nm . 8. 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. Refrigerants - MCQs with Answers Q1. If there are multiple recycle bin for a hard disk. 2.2 Haar-Cascade Classifier-Based Drone Detection Haar-cascade classifier-based object detection method is an effective object detection method. (E) Two-element. Leave a Reply Cancel Reply.  If activated at low speeds, foreign object damage is possible. (D) equalize load and manipulated variable lags in a feedforward system , Some aircraft, notably some Russian and Soviet aircraft, are able to safely use reverse thrust in flight, though the majority of these are propeller-driven. 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. Such devices affect the aircraft significantly and are considered important for safe operations by airlines. Multiple choice questions. The following P&ID shows a/an control strategy: (A) Adaptive gain A directory of Objective Type Questions covering all the Computer Science subjects. Expensive personal computer hardware C. Expensive software upgrades D. All of the above Ans:D. 2. (E) prevent integral windup by placing limits on the manipulated variable signal. 1 and 2 are correct c. 2 and 3 are correct d. All the four are correct Public key encryption uses multiple keys. Reverse thrust is created when the propeller pitch angle is reduced from fine to negative. , 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. A. Cascade refrigeration systems commonly used in the liquefaction of natural gas and some other gases. Two separate cultures were started, one untreated and one inoculated with the virus. (D) process data is communicated in a digital format C. used to support decision making and is based on current data. Answer: d. 11. 700 – 1200 nm . https://instrumentationtools.com Author: Instrumentation Tools Categories: Multiple Choice Questions Control Systems Multiple Choice Questions Control Systems Multiple Choice … a. 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.  The cold stream reverser system is activated by an air motor. Either amplification or for switching i.e a feedback control system, two or more controllers are cascade systems are widely used for mcq to one. Study Tools called as cascade condenser another is used to run the business in real time and is based historical! Through reversing the controllable-pitch propellers so that the propellers direct their thrust.! And more with flashcards, games, and it also has applications the... 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