Power Engineering - 4B12 Practice Questions With
Complete Solutions
_____ are installed to prevent hot oil from spreading beyond the
confines of a hot oil heater in the event of a ruptured tube.
a. Dikes
b. Tunnels
c. Ditches
d. By-pass pipes Correct Answers a. Dikes
A _____ system uses a thermal fluid in place of steam or water,
to conduct heat from a central source to other vessels and
heating coils in a plant.
a. Low temperature heating
b. Condensing
c. Closed
d. Hot oil Correct Answers d. Hot oil
A control room operator notices that the stack temperature of a
hot oil heater is increasing rapidly. The operator should:
a. Activate the emergency shutdown.
b. Call the shift charge engineer for advice.
c. Send an operator out to see if there is smoke coming from the
oil heater stack.
d. Wait to see if the temperature returns to normal. Correct
Answers a. Activate the emergency shutdown.
A high stack temperature in a hot oil heater may indicate:
, a. Improper fuel-air ratio
b. Excessive oil flow
c. A tube failure
d. Inadequate combustion air Correct Answers c. A tube failure
are always installed on the:
a. Hot oil inlet line to the oil heater
b. Hot oil outlet line from the oil heater
c. Circulating pump suction line
d. Circulating pump discharge line Correct Answers b. Hot oil
outlet line from the oil heater
Barking, as it occurs in a pulp mill, means:
a. To wash the incoming logs
b. To chip the logs
c. The removal of bark from the logs
d. Cutting the logs into short lengths Correct Answers c. The
removal of bark from the logs
Chemical pulping processes result in _____ of the raw forest
material input.
a. a 25% loss by weight
b. a 50% loss by weight
c. an insignificant loss
d. the most efficient use Correct Answers b. a 50% loss by
weight
Complete Solutions
_____ are installed to prevent hot oil from spreading beyond the
confines of a hot oil heater in the event of a ruptured tube.
a. Dikes
b. Tunnels
c. Ditches
d. By-pass pipes Correct Answers a. Dikes
A _____ system uses a thermal fluid in place of steam or water,
to conduct heat from a central source to other vessels and
heating coils in a plant.
a. Low temperature heating
b. Condensing
c. Closed
d. Hot oil Correct Answers d. Hot oil
A control room operator notices that the stack temperature of a
hot oil heater is increasing rapidly. The operator should:
a. Activate the emergency shutdown.
b. Call the shift charge engineer for advice.
c. Send an operator out to see if there is smoke coming from the
oil heater stack.
d. Wait to see if the temperature returns to normal. Correct
Answers a. Activate the emergency shutdown.
A high stack temperature in a hot oil heater may indicate:
, a. Improper fuel-air ratio
b. Excessive oil flow
c. A tube failure
d. Inadequate combustion air Correct Answers c. A tube failure
are always installed on the:
a. Hot oil inlet line to the oil heater
b. Hot oil outlet line from the oil heater
c. Circulating pump suction line
d. Circulating pump discharge line Correct Answers b. Hot oil
outlet line from the oil heater
Barking, as it occurs in a pulp mill, means:
a. To wash the incoming logs
b. To chip the logs
c. The removal of bark from the logs
d. Cutting the logs into short lengths Correct Answers c. The
removal of bark from the logs
Chemical pulping processes result in _____ of the raw forest
material input.
a. a 25% loss by weight
b. a 50% loss by weight
c. an insignificant loss
d. the most efficient use Correct Answers b. a 50% loss by
weight
