A. Spinčić, B. Pritchard, English Textbook for Marine Engineers 2, Rijeka 2009; Lessons1-5

BS 3rd semesterTest A1101

BS – 3rdsemester

(A. Spinčić, B. Pritchard, English textbook for marine engineers 2, Rijeka 2009; Lessons1-5)

NAME: ______Total: _____ / 50 points

1. Give short definitions of the following terms.

THE TENSILE LOAD -

THE TORQUE WRENCH -

THE FIRING ORDER -

THE CONNECTING ROD -

THE UNIFLOW SCAVENGING -

_____ / 10 points

2. Translate into Croatian.

The crankshaft, which converts the reciprocating motion of the piston to rotating motion, must resist the bending stresses caused by the connecting rod thrust when the piston is at top dead centre. Then the maximum gas pressure acts straight down on the crankpin and tends to bend the shaft between the adjacent bearings. The crankshaft must also withstand the torsional forces produced by the change of speed. Medium speed engines have crankshaft usually solid forged, i.e. made from a single piece, while slow speed engine crankshafts are mostly of semi-built design with crankpins and webs forged or cast in one piece and shrunk onto the journals. The main bearing shells are made of steel with a lining of bearing metal which can be white metal, copper-lead or aluminium-tin alloy. A thin flash of lead or indium is often added to provide an anti-corrosion layer.

_____ / 10 points

3. Translate into English.

a) Ispušni plinovi izlaze iz cilindra pri kraju takta.

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b) Podloška se umeće između pete ojnice i kućišta ležaja.

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c) Mlađi strojar, koji je primijetio kvar na kotlu, odmah je obavijestio časnika stroja.

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d) Habanje košuljice je uglavnom posljedica trenja i korozije.

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e) Kako se podmazuju ležajevi glave letećeg ležaja i gornje glave ojnice?

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f) Skinuli smo klip prije sat vremena ali nismo još sastavili izvješće.

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g) Prstenovi imaju izrez da bi se lakše montirali.

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h) Čeliku se dodaje silicij da bi mu se poboljšala elastičnost.

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i) Upravo sam razgovarao s kapom o popravcima koje treba obaviti.

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j) Blazinice temeljnog ležaja su presvučene tankim slojem bijele kovine.

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_____ / 20 points

4. Complete the text with the corresponding prepositions:at, between, from, from, in, into, through, through, to, toward

The propulsion system is what actually drives a motor yacht ______the water.Propulsion systems can be categorised ______several principal types. Most power boats are fitted with conventional shaft-and-propeller drives. ______these boats the propeller shaft has to be angled downward as it passes through the hull. Because of this angle, the thrust ______the propeller is partly directed ______trying to lift the stern instead of pushing the boat forward. In outboard drives, the drive shaft is taken directly ______the vertical engine crankshaft and then redirected through a 90-degree gearing ______the propeller shaft ______the bottom of the lower unit. With stern-drive propulsion, the so-called Z-drive, the shaft inside the leg has to pass ______two 90-degree gearing ______the engine and the propeller shaft.

_____ / 10 points

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