PICAT MECHANICAL COMPREHENSION EXAM QUESTIONS

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PICAT MECHANICAL COMPREHENSION EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -14 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: driver gear/12 teeth driven gear/36 teeth

in the gear train shown in the illustration, if the driver gear rotates at 120 revolutions per minute (rpm), at what rpm does the driven gear rotate?

• 40
• 60
• 120
• 360

Answer:

• 40

Question 2: a car is moving at an initial velocity of 5 m/s and then accelerates uniformly at 10 m/s. what is the cars velocity after 2 seconds?

• 5m/s
• 15 m/s
• 20 m/s
• 25 m/s

Answer:

• 20 m/s

Question 3: which of the wheels shown in the diagram are rotating in the same direction?

Answer:

a, b, c, and e Question 4: after the crank turns 3.5 times, what will be the position of the piston within the cylinder?

• at the top
• same place
• at the bottom
• close to the bottom

Answer:

• at the bottom

Question 5: which of the following is a true statement regarding air pressure and temperature, when moving from sea level to the highest mountain top?

• both air pressure and average temperature increases
• both air pressure and average temperature decreases
• air pressure increases and average temperature decreases
• air pressure decreases and average temperature increases

Answer:

• both air pressure and average temperature decreases

Question 6: an object moves on a frictionless plane at a velocity of 2 m/s. if no external force acts on the object, what is the objects velocity after 10 seconds?

• 2 m/s
• 4 m/s
• 10 m/s

d 20m/s

Answer:

• 2 m/s

Question 7: which of the following is used to measure rotational speed?

• pyrometer
• barometer
• hydrometer
• tachometer

Answer:

• tachometer

Question 8: which force do washing machines finally use to remove water from wet clothing?

• normal
• frictional
• centrifugal
• gravitational

Answer:

• centrifugal

Question 9: the main characteristic that distinguishes a suspension bridge from other types of bridges is that it uses

• I-beams
• short spans
• continuous trusses
• cables to carry the load

Answer:

• cables to carry the load

Question 10: a beam has a maximum strength of 3,00 psi. a 500-pound weight is added to the center of the beam and creates an added stress of 1,00o psi to the beam. how much more weight can the beam take, at its center, before it reaches its breaking point?

• 500 pounds
• 1,000 pounds
• 1,500 pounds
• 2,500 pounds

Answer:

• 1,000 pounds

Question 11: 2 in from load to fulcrum/ 6 in from fulcrum to effort

what is the mechanical advantage of the pliers shown in the illustration?

• 3
• 4
• 8
• 12

Answer:

• 12

Question 12: in this diagram of a simple gearbox, the gear ratios for each pair of gears is given.what will be the output speed if the input speed is 240 rpm?

• 10 rpm
• 20 rpm
• 60 rpm
• 120rpm

Answer:

• 10 rpm