Internal Combustion Engine 2011 Objective Paper


70)When using a high BN MECYL oil and suddenly the ship has to use low sulphur 380 cst HO in the ME, due to SECA area entry--

a)reduce the feed of MECYL

b)increase the feed of MECYL

c)do not change the feed rate

d)increase the BN of the MECYL

Answer-A


71)ME scavenge air temperature is adjusted by

a)controlling the sea water inlet

b)controlling the sea water outlet

c)keeping outlet valve 100% open always.

d)none of above

Answer-B


72)The ME jacket FW cooling outlet temperature is-

a)80C

b)95C

c)50C

d)55C

Answer-A


73)The scavenge air high temperature set point for 2 stroke ME is

a)40C

b)55C

c)65C

d)35C

Answer-B


74)You see white smoke coming from the ME funnel stack, this could be

a)one or more cylinders not getting enough fuel

b)too low compression pressure

c)water in fuel

d)all of above

Answer-C


75)The crank angles of a 2 stroke engine are

a)2 cylinder engine/ 90 degrees

b)4 cylinder engine/ 60 degrees

c)6 cylinder engine/ 90 degrees

d)4 cylinder engine/ 90 degrees

Answer-D


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