ASVAB Mechanical Comprehension #1 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\
The tank, T, is to be raised as shown, in the above figure, by
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
attaching the pull rope to a truck. If the tank is to be raised 10 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
feet, the truck will have to move... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 10 feet.
||\\||\\ ||\\||\\
b. 30 feet.
||\\||\\ ||\\||\\
c. 40 feet.
||\\||\\ ||\\||\\
d. 20 feet.
||\\||\\ ||\\||\\
B; The truck will have to move 30 feet. Three ropes are
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
supporting tank T. The mechanical advantage (the number of ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
supporting wires holding the load) is three. The distance must ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
be three times the height raised.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Eight gallons of water per minute are flowing at a given time
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the 1-inch outlet in the tank shown above. What is the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
amount of water flowing at that time from the 2-inch outlet? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 64 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. 32 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
c. 16 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
d. 2 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B; The volume is dependent on the area of the outlet. Since
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A=Ir.
, In the above illustration, crank arm C revolves at a constant
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
speed of 400 rpm and drives the lever AB. When lever AB is ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
moving the fastest, arm C will be in position... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 5 ||\\||\\
b. 6 ||\\||\\
c. 7 ||\\||\\
d. 1 ||\\||\\
A; The slowest points for lever AB are 3 and 7 where the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
direction reverses and the velocity momentarily becomes zero. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The midpoint, 5, represents the maximum speed, as it is halfway
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
between these minimum points.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Assume that the color of the flame from a gas stove is bright ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
yellow. To correct this, you should... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. close the air flap.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. increase the size of the gas opening.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
c. increase the gas pressure.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
d. open the air flap.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D; A yellow flame means too much fuel or too little oxygen is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
present during combustion. The best answer is to allow more air ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
to enter and mix with the gas.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
In the above illustration, if gear A makes one clockwise
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
revolution per minute, which of the following is correct? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. Gear B makes four clockwise revolutions every minute.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. Gear C makes one counterclockwise revolution every 8
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\
The tank, T, is to be raised as shown, in the above figure, by
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
attaching the pull rope to a truck. If the tank is to be raised 10 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
feet, the truck will have to move... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 10 feet.
||\\||\\ ||\\||\\
b. 30 feet.
||\\||\\ ||\\||\\
c. 40 feet.
||\\||\\ ||\\||\\
d. 20 feet.
||\\||\\ ||\\||\\
B; The truck will have to move 30 feet. Three ropes are
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
supporting tank T. The mechanical advantage (the number of ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
supporting wires holding the load) is three. The distance must ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
be three times the height raised.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Eight gallons of water per minute are flowing at a given time
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the 1-inch outlet in the tank shown above. What is the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
amount of water flowing at that time from the 2-inch outlet? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 64 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. 32 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
c. 16 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
d. 2 gallons per minute
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B; The volume is dependent on the area of the outlet. Since
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A=Ir.
, In the above illustration, crank arm C revolves at a constant
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
speed of 400 rpm and drives the lever AB. When lever AB is ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
moving the fastest, arm C will be in position... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. 5 ||\\||\\
b. 6 ||\\||\\
c. 7 ||\\||\\
d. 1 ||\\||\\
A; The slowest points for lever AB are 3 and 7 where the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
direction reverses and the velocity momentarily becomes zero. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The midpoint, 5, represents the maximum speed, as it is halfway
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
between these minimum points.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Assume that the color of the flame from a gas stove is bright ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
yellow. To correct this, you should... ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. close the air flap.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. increase the size of the gas opening.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
c. increase the gas pressure.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
d. open the air flap.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D; A yellow flame means too much fuel or too little oxygen is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
present during combustion. The best answer is to allow more air ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
to enter and mix with the gas.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
In the above illustration, if gear A makes one clockwise
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
revolution per minute, which of the following is correct? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a. Gear B makes four clockwise revolutions every minute.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
b. Gear C makes one counterclockwise revolution every 8
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
