Search for Reduce

Where is the main fuel strainer located in the aircraft fuel system? :: At the lowest point in the fuel system. If carburetor heat is applied on an aircraft with a fuel injection system, what happens? :: Carburetor heat is not installed. During idle mixture adjustments, what indicates the correct mixture has been achieved? :: Slight rise in RPM. What can cause an engine with a float-type carburetor to run rich at full throttle? :: Fuel level in the float bowl set too high. What happens if the idling jet becomes clogged in a float-type carburetor? :: The engine will not idle. What fuel/air mixture ratio normally produces maximum power in a reciprocating engine? :: 12:1. What results from excessively rich or lean idle mixtures? :: Incomplete combustion. What is the primary function of boost pumps in a fuel system? :: Provide a positive flow of fuel to the engine pump. What is the purpose of an engine-driven fuel pump bypass valve? :: Prevent a damaged or inoperative pump from blocking fuel flow from another pump. Where must a fuel strainer or filter be located? :: Between the tank outlet and the fuel metering device. Which is NOT a function of the carburetor venturi? :: Regulates the idle system. What corrective action should be taken if a carburetor leaks fuel from the discharge nozzle? :: Replace the needle valve and seat. How is the float level commonly adjusted in a float-type carburetor? :: Bend tab or add/remove shims under the needle valve. When should engine idle speed and mixture settings be adjusted? :: With the engine warmed up and operating. What is the function of the economizer system in a float-type carburetor? :: Supplies additional fuel above cruising power. When are fuel boost pumps operated? :: To provide a positive flow of fuel to the engine. On a carburetor without automatic mixture control, what happens to the mixture as altitude increases? :: It becomes richer. Where is the engine fuel shutoff valve usually located? :: Aft of the firewall. What is true regarding proper throttle rigging? :: The throttle stop on the carburetor must contact before the cockpit stop. What decreases reciprocating engine power at all altitudes? :: Increased humidity. When should float carburetors normally be overhauled? :: At engine overhaul. Why should fuel lines avoid sharp curves and steep rises/falls? :: To prevent vapor lock. How is float level measured in a float-type carburetor? :: From the fuel level to the parting surface of the carburetor. Why are fuel lines kept away from heat and sharp bends? :: To reduce vapor lock. At idle speed, where is fuel discharged in a float-type carburetor? :: From the idle discharge nozzle. What carburetor component limits maximum airflow at full throttle? :: Venturi. When an electric primer is used, fuel pressure is supplied by what? :: Boost pump. Why does an aircraft carburetor have a mixture control? :: To prevent the mixture from becoming too rich at high altitudes. What must all aircraft fuel systems include? :: A positive means of shutting off fuel to all engines. What additional effect does a carburetor air scoop provide? :: Increases incoming air pressure by ram effect. What happens when carburetor heat is applied? :: The mixture becomes richer. What does an increase in RPM or manifold pressure after applying carburetor heat indicate? :: Carburetor ice was forming. If an engine runs rough at high power and smooths out when leaned, what is the probable cause? :: Excessively rich mixture. What is the function of the venturi in a carburetor? :: Creates a vacuum to draw fuel into the airstream. What can result from an excessively rich fuel mixture? :: Carbon buildup on spark plugs. What is the primary purpose of the mixture control lever? :: Adjust fuel flow for changes in altitude. What typically happens to engine performance when carburetor heat is applied? :: Engine RPM decreases. What device prevents or eliminates carburetor icing? :: Carburetor heat. What condition is most likely to cause carburetor icing? :: High humidity and moderate temperatures. What is the main disadvantage of a float-type carburetor compared to fuel injection? :: Increased risk of carburetor icing. What is the most common fuel metering device used in small aircraft engines? :: Float-type carburetor. What is the primary function of a carburetor? :: Mix fuel and air in the correct ratio for combustion. What is the primary function of an aircraft induction system? :: Deliver air to the engine for combustion. What are light aircraft engines usually equipped with? :: Carburetor or fuel injection system. What does a typical induction system on a naturally aspirated engine consist of? :: All of these. What does a turbocharger use to increase manifold pressure? :: Exhaust gases. How does altitude affect a normally aspirated engine? :: Decreases power output. What is a disadvantage of a carbureted induction system? :: Higher risk of icing. How does an alternate air system function? :: Allows the engine to draw unfiltered air if the main filter is blocked. What is a common method for checking induction leaks on a carbureted engine? :: Look for blue stains near the induction manifold and use a soapy water solution. On small aircraft engines, how may fuel vaporization be increased? :: By circulating the fuel-air mixture through passages in the oil sump. What additional effect can a carburetor airscoop provide? :: Increase the pressure of incoming air by ram effect. What is true regarding volumetric efficiency? :: Supercharging can increase volumetric efficiency above 100%. What fluid is commonly used for reciprocating engine induction system deicing? :: Alcohol. What is the system called when the fuel-air mixture flows through passages in the oil sump? :: Hot Spot Induction. What is the most satisfactory extinguishing agent for a tailpipe or intake fire? :: Carbon dioxide. What effect does applying carburetor heat have during engine operation? :: Decreases the weight of the fuel-air charge. If carburetor heat is applied and no icing is present, what happens? :: The mixture becomes richer. What happens in some aircraft if the induction air filter becomes blocked? :: The system automatically allows warm, unfiltered air into the engine. What should an operator do if an induction fire starts during engine starting? :: Continue cranking the engine. What effect does carburetor heat have on the mixture? :: The mixture becomes richer. What does an increase in RPM or manifold pressure after applying carburetor heat indicate? :: Ice was forming in the carburetor. In what position should the carburetor heat control be during engine starting? :: Cold or Off. Is carburetor heated air filtered? :: No. What can result from using carburetor heat when it is not needed? :: Decrease in power and possible detonation. What part of an aircraft will usually accumulate ice first in flight? :: Carburetor. How may carburetor icing be eliminated? :: Alcohol spray and heated induction air. What is the most common method of preventing carburetor icing? :: Preheating the intake air. Where would the carburetor air heat valve be located in a fuel injection system? :: None is required. What are the two most common types of aircraft induction air filters? :: Dry paper filters and wetted mesh filters

What are some examples of human behaviors that might be considered instinctual? Human instinctual behaviors include newborn reflexes (like grasping), fear responses (like loud noises or heights), bonding between parents and children, facial expressions (like smiling and crying), the fight-or-flight response, imitation, language learning ability, and the need for social connection. In Drive-Reduction Theory, what is meant by a “drive”? What about “homeostasis”? In Drive-Reduction Theory, a “drive” is an internal state of tension or discomfort caused by an unmet biological need, such as hunger or thirst, that motivates a person to act. “Homeostasis” refers to the body’s tendency to maintain a stable and balanced internal state, so behaviors are motivated by the desire to reduce drives and restore balance. How is the Arousal Theory different from Drive-Reduction Theory? Arousal Theory focuses on seeking an optimal level of stimulation, while Drive-Reduction Theory focuses on reducing biological needs. Arousal explains thrill-seeking; drive-reduction explains behaviors like eating when hungry. How does Maslow’s Hierarchy suggest we prioritize our goals? Maslow's Hierarchy of Needs suggests that people tend to prioritize basic needs before higher-level goals. According to the theory, physiological needs like food and sleep come first, followed by safety, love and belonging, esteem, and finally self-actualization, which involves reaching one’s full potential. The idea is that lower-level needs usually must be reasonably satisfied before a person focuses strongly on higher-level needs. Give a real-life example of each level of Maslow’s hierarchy. In Maslow's Hierarchy of Needs, physiological needs include food and sleep, safety needs include shelter and security, love and belonging involve friendships and family, esteem needs include confidence and respect, and self-actualization involves reaching personal goals and potential. Why might Maslow's theory be criticized across different cultures?+ù Maslow's Hierarchy of Needs may be criticized across cultures because it reflects individualistic values, such as personal achievement and self-actualization, which may not be prioritized equally in all societies. In some cultures, community, family, or group needs may be considered more important than individual goals. What is the difference between intrinsic and extrinsic motivation? Intrinsic Motivation comes from internal enjoyment or personal satisfaction, while Extrinsic Motivation comes from external rewards or pressures, such as money, grades, or praise. Which type of motivation do you think leads to more lasting change? Why? Intrinsic Motivation usually leads to more lasting change because the behavior is driven by genuine interest, enjoyment, or personal meaning, so it continues even without external rewards. Extrinsic Motivation can be effective in the short term, but the behavior often stops when rewards or pressure are removed, since the motivation depends on outside factors rather than internal commitment. What are the traits of someone with a high need for achievement? A person with a high need for achievement sets challenging but realistic goals, prefers tasks with clear personal responsibility, seeks feedback, and is persistent. They are motivated by doing well and improving rather than just external rewards. Why might low achievers choose tasks that are either very easy or very hard? People with a low need for achievement may choose very easy tasks because they are almost guaranteed success, which helps them avoid failure and protect their self-esteem. They may also choose very hard tasks because failure can be blamed on the difficulty of the task rather than their ability, which also protects their self-image. What role does the hypothalamus play in hunger? The hypothalamus helps regulate hunger by monitoring the body’s energy needs and signaling when to eat or stop eating. Different parts work together: one area triggers hunger when energy is low, while another signals fullness after eating. It responds to hormones, blood sugar levels, and signals from the stomach to maintain balance. What is the difference between set point theory and settling point theory? Set point theory says the body has a fixed, biologically controlled weight it tries to maintain. Settling point theory says weight is flexible and depends on lifestyle and environment, so it can change over time. What psychological and social cues can influence how much we eat? Psychological cues like stress, mood, and distraction can increase or decrease how much we eat. Social cues such as eating with others, portion sizes, and cultural expectations also strongly influence eating behavior. What are the symptoms of anorexia nervosa? Anorexia Nervosa includes extreme food restriction, significant weight loss, intense fear of gaining weight, and a distorted body image. It can also cause fatigue, dizziness, feeling cold, and in some cases, serious health problems. How does bulimia differ from anorexia? Bulimia Nervosa involves binge eating followed by purging and often normal weight. Anorexia Nervosa involves severe food restriction and very low body weight. How might perfectionism be linked to the development of eating disorders? Perfectionism can lead people to set unrealistically high standards for their body, weight, or eating habits, which increases stress and dissatisfaction. This pressure can contribute to restrictive eating or binge-purge behaviors as they try to “achieve” an ideal body image. According to James-Lange theory, what comes first: the emotion or the physical response? According to James-Lange Theory, the physical response comes first. The body reacts to a stimulus, and then the brain interprets those physical changes as an emotion. How does Cannon-Bard theory explain simultaneous emotion and bodily reaction? Cannon-Bard Theory says emotion and bodily reaction happen at the same time. A stimulus triggers the brain to send signals that produce both the emotional experience and the physical response simultaneously, rather than one causing the other. What evidence supports the idea that emotions are biologically universal? Evidence shows people across cultures recognize the same facial expressions, and even blind people show them, suggesting emotions are biologically universal. Similar brain activity patterns also support this idea. . What are Paul Ekman’s universal emotions? Paul Ekman identified six universal emotions: happiness, sadness, anger, fear, disgust, and surprise. How might facial expressions influence how we feel? Facial expressions can shape emotions through the idea that acting a certain way can influence how we feel internally. For example, smiling may increase feelings of happiness, while frowning can intensify sadness. Body and facial feedback to the brain helps reinforce or even create emotional experiences. Why is it important to recognize that emotions can be expressed differently across cultures? Paul Ekman shows some emotions are universal, but recognizing cultural differences matters because people can display and interpret emotions in different ways across cultures. Misunderstanding these differences can lead to miscommunication or incorrect judgments about others’ feelings or intentions