Power Engineering - 4A1 Practice Questions With Complete
Solutions
(4-009-1.1) What is the force of gravity exerted on an object
having a mass of 5 tonnes?
a. 4.905 N
b. 49.05 N
c. 490.5 N
d. 49 050 N Correct Answers d. 49 050 N
(4-009-1.10) A body moves in a straight line at 20m/s. Six
seconds later it is moving at 35m/s. What was the acceleration of
the body during that time?
a. 9.167 m/s²
b. 9.167 m/s
c. 0.4 m/s²
d. 2.5 m/s² Correct Answers d. 2.5 m/s²
(4-009-1.11) If a body travels north 850m in 34 seconds, what
will its average velocity be, in km/h?
a. 25
b. 900
c. 90
d. 215 Correct Answers c. 90
(4-009-1.2) What is the power required to apply a 200kN force
over a distance of 15m in 15 seconds?
a. 3000 W
,b. 1500 kW
c. 1000 kW
d. 200 kW Correct Answers d. 200 kW
(4-009-1.3) Any action on a body that tends to change its size,
shape or state of motion is defined as:
a. Displacement
b. Acceleration
c. Volume
d. Force Correct Answers d. Force
(4-009-1.4) The mass of an object may be measured in:
a. Joules
b. kg
c. Newtons
d. kJ/kg Correct Answers b. kg
(4-009-1.5) In the SI system, the standard unit when indicating
force is the:
a. Newton
b. MJ
c. kg force
d. Nm Correct Answers a. Newton
(4-009-1.6) The unit used to indicate acceleration in the SI
system is:
a. m/s^2
, b. m/s
c. m^2/s
d. km/s Correct Answers a. m/s^2
(4-009-1.7) The change of position (in meters) per unit time is:
a. Acceleration
b. Displacement
c. Velocity
d. Force Correct Answers c. Velocity
(4-009-1.8) The rate of change of velocity is called:
a. Mass
b. Force
c. Acceleration
d. Weight Correct Answers c. Acceleration
(4-009-2.10) If a person pushes on a rock with a force of 300N
and the rock does not move, the amount of work done is
a. 300N
b. 300J
c. 150J
d. Zero J Correct Answers d. Zero J
(4-009-2.11) The unit of measure for energy in the SI system is
the:
a. Work
b. Joule
Solutions
(4-009-1.1) What is the force of gravity exerted on an object
having a mass of 5 tonnes?
a. 4.905 N
b. 49.05 N
c. 490.5 N
d. 49 050 N Correct Answers d. 49 050 N
(4-009-1.10) A body moves in a straight line at 20m/s. Six
seconds later it is moving at 35m/s. What was the acceleration of
the body during that time?
a. 9.167 m/s²
b. 9.167 m/s
c. 0.4 m/s²
d. 2.5 m/s² Correct Answers d. 2.5 m/s²
(4-009-1.11) If a body travels north 850m in 34 seconds, what
will its average velocity be, in km/h?
a. 25
b. 900
c. 90
d. 215 Correct Answers c. 90
(4-009-1.2) What is the power required to apply a 200kN force
over a distance of 15m in 15 seconds?
a. 3000 W
,b. 1500 kW
c. 1000 kW
d. 200 kW Correct Answers d. 200 kW
(4-009-1.3) Any action on a body that tends to change its size,
shape or state of motion is defined as:
a. Displacement
b. Acceleration
c. Volume
d. Force Correct Answers d. Force
(4-009-1.4) The mass of an object may be measured in:
a. Joules
b. kg
c. Newtons
d. kJ/kg Correct Answers b. kg
(4-009-1.5) In the SI system, the standard unit when indicating
force is the:
a. Newton
b. MJ
c. kg force
d. Nm Correct Answers a. Newton
(4-009-1.6) The unit used to indicate acceleration in the SI
system is:
a. m/s^2
, b. m/s
c. m^2/s
d. km/s Correct Answers a. m/s^2
(4-009-1.7) The change of position (in meters) per unit time is:
a. Acceleration
b. Displacement
c. Velocity
d. Force Correct Answers c. Velocity
(4-009-1.8) The rate of change of velocity is called:
a. Mass
b. Force
c. Acceleration
d. Weight Correct Answers c. Acceleration
(4-009-2.10) If a person pushes on a rock with a force of 300N
and the rock does not move, the amount of work done is
a. 300N
b. 300J
c. 150J
d. Zero J Correct Answers d. Zero J
(4-009-2.11) The unit of measure for energy in the SI system is
the:
a. Work
b. Joule
