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PE Civil Mechanical Engineering — practice questions

Explore 30 free Mechanical Engineering questions in PE Civil Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Mechanical Engineering questions and exercises with answers

Showing questions 1–30 of 30.

An engineer records the angular position of a shaft. The unit used is the:Read the answer and worked solution →Because it is a ratio of two lengths, the radian measure is:Read the answer and worked solution →The time rate of change of angular position is the angular:Read the answer and worked solution →Angular velocity is measured in radians per:Read the answer and worked solution →The tangential speed of a point on a rotating body equals angular velocity times the:Read the answer and worked solution →A point twice as far from the axis therefore has a tangential speed that is:Read the answer and worked solution →The direction of the angular velocity vector is found using the rule known as:Read the answer and worked solution →Tangential velocity is obtained from angular velocity and the position vector by taking their:Read the answer and worked solution →A skater pulling their arms inward while spinning shows a change in angular:Read the answer and worked solution →Angular acceleration is measured in radians per second per:Read the answer and worked solution →The quantitative measure of rotational inertia is the moment of:Read the answer and worked solution →The rotational kinetic energy of a rigid body is proportional to the square of the angular:Read the answer and worked solution →Storing energy in a heavy spinning wheel exploits rotational kinetic energy in a device called a:Read the answer and worked solution →Computing the moment of inertia of a compound object is eased by the theorem named:Read the answer and worked solution →The SI unit of torque is the newton multiplied by the:Read the answer and worked solution →The perpendicular distance from the axis to the line of the force is called the:Read the answer and worked solution →Several torques acting about one axis are combined by finding their:Read the answer and worked solution →Acceleration caused by the change in direction of tangential velocity is called:Read the answer and worked solution →Unlike linear position measured in metres, angular position is measured in units that are:Read the answer and worked solution →The more massive an object is, the more of this it has in linear motion:Read the answer and worked solution →Six washers on a light rod illustrate the moment of inertia of a system of:Read the answer and worked solution →The branch describing the motion of a rotating rigid body about a fixed axis is rotational:Read the answer and worked solution →Catch the rotation wordsRead the answer and worked solution →Pop the torque factorsRead the answer and worked solution →Run the rotation gatesRead the answer and worked solution →Slice the physics wordsRead the answer and worked solution →Linear or rotationalRead the answer and worked solution →Sort the rotation wordsRead the answer and worked solution →Type the numberRead the answer and worked solution →Rotation bingoRead the answer and worked solution →

Worked practice questions

An engineer records the angular position of a shaft. The unit used is the:

  1. Radian
  2. Rankine
  3. Rontgen
  4. Roebling
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Correct answer: A. Radian

1. Angular position measures how far around the shaft has turned. 2. The standard angular unit comes from arc length over radius. 3. That unit is the radian. _Source: OpenStax University Physics Volume 1, Chapter 10, Fixed-Axis Rotation._

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Because it is a ratio of two lengths, the radian measure is:

  1. Discontinuous
  2. Dimensionless
  3. Directionless
  4. Displacement
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Correct answer: B. Dimensionless

1. Arc length and radius are both measured in metres. 2. Dividing one by the other cancels the units. 3. So the radian is dimensionless. _Source: OpenStax University Physics Volume 1, Chapter 10, Fixed-Axis Rotation._

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The time rate of change of angular position is the angular:

  1. Velocity
  2. Volume
  3. Voltage
  4. Viscosity
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Correct answer: A. Velocity

1. The angle swept changes as the body turns. 2. How fast it changes is the quantity wanted. 3. That quantity is angular velocity. _Source: OpenStax University Physics Volume 1, Chapter 10, Fixed-Axis Rotation._

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More Physics topics

MechanicsPhysicsRotational MotionRotation and Torque