Emergency extension of landing gear systems can be performed:1. with compressed C02.2. with compressed nitrogen.3. with compressed oxygen.4. by mechanical/manual means.5. by freefall.The combination that regroups all of the correct statements is:4
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In a hydraulic braking system, an accumulator is pre-charged to 1200 psi.An electrically driven hydraulic pump is started and provides a system pressure of 3000 psi.The hydraulic pressure gauge which is connected to the gas section of the accumulator, reads:4
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In addition to energy storage, the accumulator of the hydraulic system is used:4
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The type of hydraulic fluid which has the greatest resistance to cavitation is:4
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During flight, the wing anti-ice system has to protect4
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The pressurization of tanks is maintained by the fuel:4
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Alternating current can be derived from direct current by:4
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A thermal circuit breaker:4
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In an aircraft equipped with a DC main power system, AC for instrument operation may be obtained from:4
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A unit that converts electrical DC into AC is:4
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