CASA CPL - AGK (ATC) - Multiple-Choice Questions 01

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0 [{"id":168690,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 04:43:43","updated_at":"2017-02-02 04:43:43","questionName":"The basic purpose of adjusting the mixture at altitude is","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"As altitude increases the density of the air decreases. The amount of fuel that is added to this air is determined by the volume of air passing through the carburettor not by the mass of air. Therefore, as altitude is gained the same volume of air passes ","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168675,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:37:01","updated_at":"2017-02-02 03:37:01","questionName":"The application of carburettor heat may cause","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"The application of carburettor heat will pass heated air through the carburettor to melt the ice that has formed there. Because warm air is less dense, the effect will be to reduce the power from the engine. This will be shown as a decrease in RPM (or man","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168293,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-01-31 04:00:52","updated_at":"2017-01-31 04:00:52","questionName":"In which sections of the carburettor would icing most likely occur","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"There are three major types of carburettor icing: impact ice, fuel ice and throttle ice. When fuel is introduced into the airstream, the temperature of the resulting fuel\/air mixture is lowered substantially due to the latent heat of absorption that occur","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168681,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:48:34","updated_at":"2017-02-02 03:48:34","questionName":"The presence of carburettor ice in an aeroplane equipped with a fixed-pitch propeller can be verified by applying carburettor heat and noting","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"If carburettor ice is suspected apply full carburettor heat. Initally the RPM will decrease and the engine may run very roughly as the melted ice passes through the cylinders, but this will soon disappear. When the ice is cleared from the carburettor, the","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168685,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:53:52","updated_at":"2017-02-02 03:53:52","questionName":"As the aeroplane climbs at maximum continuous power, if the mixture control is left in full rich, the fuel\/air mixture will","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"As altitude is gained in a climb, the volume of air flowing through the carburettor remains the same, but the weight of air is less due to its lower density. The same weight of fuel is drawn into the airstream, however, which means the fuel\/air mixture is","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168290,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-01-31 03:48:50","updated_at":"2017-01-31 03:48:50","questionName":"The accelerator pump in a carburettor is used to","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"The accelerator pump is a small plunger within the float chamber, connected to the throttle linkage so that it gives an extra spurt of fuel as the throttle is opened. Hence an excessively lean mixture is avoided","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168292,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-01-31 03:56:36","updated_at":"2017-01-31 03:56:36","questionName":"One of the disadvantages of fuel-injection systems compared with carburettor systems is","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"Starting an already hot engine which has a fuel-injection system may be difficult due to vapour locking in the fuel lines. Electric boost pumps that pressurise the fuel lines can help to alleviate this problem. (All other Answers are advantages of a fuel-","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168688,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 04:23:50","updated_at":"2017-02-02 04:23:50","questionName":"The main purpose of the mixture control is to","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"The fuel\/air ratio is the ratio between the weight of fuel and the weight of air mixed together and entering the cylinders where combustion is to occur. The mixture control directly meters the amount of fuel available to be mixed with this air to obtain t","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168673,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:22:06","updated_at":"2017-02-02 03:22:06","questionName":"The low temperature that causes carburettor ice in an engine equipped with a float type carburettor is normally the result of the ","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"Both fuel vaporisation and the acceleration of the fuel\/air mixture cause a decrease in temperature as a result of the latent heat of absorption and the decrease in static pressure respectively. This decrease in temperature increases the likelihood of bot","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168684,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:51:10","updated_at":"2017-02-02 03:51:10","questionName":"The mixture control is used to","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"There are two major types of mixture-control systems, the needle type and the back-suction type. Both of these systems control the amount of fuel reaching the main metering jet and therefore control the fuel\/air ratio.","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168291,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-01-31 03:52:24","updated_at":"2017-01-31 03:52:24","questionName":"A fuel-injection system is more efficient that a carburettor, because","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"Fuel-injection systems allow instant acceleration of the engine from idle power. The fuel-injection system supplies each cylinder with the same correct mixture; it cannot alter the mixture for individual cylinders. Impact ice can form in both the carburet","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168687,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 04:04:56","updated_at":"2017-02-02 04:04:56","questionName":"Detonation is likely to occur when","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"The primary cause of detonation is an excessive temperature of the air passing through the carburettor. Other contributory factors are: *A time-expired fuel; *An overlean mixture at high power settings; *Excessive manifold pressure; *An overheated engine ","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168676,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 03:44:51","updated_at":"2017-02-02 03:44:51","questionName":"Compare carburettor-equipped engines with those equipped with fuel injection (Select the true statement concerning these systems)","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"Unlike normally aspirated engines which use a carburettor, fuel-injected engines are only susceptible to two major forms of icing: impace ice and throttle ice. This is because each of the cylinders are served by their own fuel discharge nozzle, thus elimi","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168686,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 04:00:18","updated_at":"2017-02-02 04:00:18","questionName":"If you do not lean the mixture during a prolonged climb, this may result in","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"Failure to lean the mixture means that the fuel\/air ratio will be too rich and this may lead to increased fuel consumption and a loss of power. There will also be a possibility of rough running, but this will not be associated with a rise in RPM as in the","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":168689,"quiz_id":"10247","answer_id":null,"answerType_id":"0","created_at":"2017-02-02 04:27:49","updated_at":"2017-02-02 04:27:49","questionName":"What change occurs in the fuel\/air mixture when the carburettor heat is applied","questionTimeSeconds":"0","questionTimeMinutes":"1","questionImagePath":null,"position":null,"explanation":"The carburettor heat system usually involves heatings the induction air by passing it through a jacket that is heated by the hot exhaust system. The density of this air will be less. The amount of fuel that is added to this air is determined by the volume","question_score_id":null,"lang":null,"questionAudioPath":null}]
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The basic purpose of adjusting the mixture at altitude is

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