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39.  An indication of the presence of carburetor ice is: ^[[reduced Man Pres.]]

40.  The two methods used to combat carburetor icing are:
a.  ^[[Heat]]
b.  ^[[Alcohol]]

[[underlined]] OIL SYSTEM [[/underlined]]

41.  The usable oil capacity is ^[[25]] gallons and the oil tanks are located ^[[on each engine nacelle]]

42.  The minimum oil temperature and fuel pressure for run-up are ^[[40°C]] and ^[[16 psi]] respectively.

43.  Minimum oil pressure for flight is:
a.  40 PSI.
b.  70 PSI.
[[circled]] c. [[/circled]]  60 PSI.

44.  Normal oil temperature should read:
a.  60°C to 90°C.
[[circled]] b. [[/circled]] 60°C to 80°C.
c.  40°C to 100°C.

45.  The procedure for oil dilution is:  ^[[1. Engines 1000-1200 rpm.  2. Oil temp below 50°C.  3. Dilute sw 2-4-7 min.  4. Prop controls.  5. Accelerate 10 sec.  6. Idle cut-off, holding dil s.w ON.

[[underlined]] FUEL SYSTEM [[/underlined]]

46.  The total usable fuel in US fallons in the C-47 is:
a.  402 gallons mains;  400 gallons auxs.
[[circled]] b. [[/circled]] 404 gallons mains;  398 gallons auxs.
c.  800 gallons all tanks.

47.  The selector handle on the fuel quantity indicator is turned ^[[clockwise]] when checking the fuel tank quantities.

48.  Minimum fuel pressure for flight is:
[[circled]] a. [[/circled]]  16 PSI.
b.  18 PSI.
c.  20 PSI.

49.  What is the normal usage of fuel with full tanks, and why?  ^[[Mains - then aux - C.G.]]

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