Machine Dynamics MCQ

Test your knowledge with important Machine Dynamics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Machine Dynamics MCQs at Bissoy

• Which of the following should be done to make an unstable system stable ?
  ক

  The gain of the system should be decreased

  খ

  The gain of the system should be increased

  গ

  The number of poles to the loop transfer function should be increased

  ঘ

  The number of zeros to the loop transfer function should be increased
• Which of the following devices are commonly used as error detectors in instruments ?
  ক

  Vernistats

  খ

  Microsyns

  গ

  Resolvers

  ঘ

  None of the mentioned
• By which of the following the control action is determined when a man walks along a path ?
  ক

  Brain

  খ

  Hands

  গ

  Legs

  ঘ

  Eyes
• A closed loop system is distinguished from open loop system by which of the following ?
  ক

  Servomechanism

  খ

  Feedback

  গ

  Output pattern

  ঘ

  Input pattern
• An automatic toaster is a __________ loop control system.
  ক

  open

  খ

  closed

  গ

  partially closed

  ঘ

  none of the mentioned
• A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
  ক

  Clutch

  খ

  Eyes

  গ

  Needle of the speedometer

  ঘ

  Steering wheel
• The following has tendency to oscillate.
  ক

  Open loop system and ( nor (

  খ

  Closed loop system

  গ

  Both (a) and (b)

  ঘ

  Neither (a) nor (b)
• Which of the following statements is not necessarily correct for open control system ?
  ক

  Input command is the sole factor responsible for providing the control action

  খ

  Presence of non-linearities causes malfunctioning

  গ

  Less expensive

  ঘ

  Generally free from problems of non-linearities
• Which of the following is an open loop control system ?
  ক

  Field controlled D.C. motor

  খ

  Ward leonard control

  গ

  Metadyne

  ঘ

  Stroboscope
• For open control system which of the following statements is incorrect ?
  ক

  Less expensive

  খ

  Recalibration is not required for maintaining the required quality of the output

  গ

  Construction is simple and maintenance easy

  ঘ

  Errors are caused by disturbances
• Increasing the amplitude of the signal without affecting its waveform is known as
  ক

  amplification

  খ

  transducer

  গ

  feed back

  ঘ

  none of the mentioned
• It is a device to change a signal which is in one physical form to a corresponding signal in another physical form.
  ক

  amplification

  খ

  transducer

  গ

  feed back

  ঘ

  none of the mentioned
• A differential device used to measure the actual controlled quantity and to compare it continuously with the desired value is called
  ক

  regulator

  খ

  kinetic control

  গ

  feed back

  ঘ

  error detector
• The automatic control of the displacement or velocity or acceleration of a member of a machine is called as
  ক

  regulator

  খ

  kinetic control

  গ

  feed back

  ঘ

  error detector
• The instrument measuring the output of the machine for comparison with the input to the machine is known as
  ক

  regulator

  খ

  kinetic control

  গ

  feed back

  ঘ

  error detector
• The device used to keep the variables at a constant desired value is called as
  ক

  regulator

  খ

  kinetic control

  গ

  feed back

  ঘ

  error detector
• The device which controls a process is called a
  ক

  response

  খ

  command

  গ

  process control

  ঘ

  process controller
• The automatic control of variables is known as
  ক

  response

  খ

  command

  গ

  process control

  ঘ

  process controller
• The subsequent result of the system to the command is known as
  ক

  response

  খ

  command

  গ

  process control

  ঘ

  process controller
• The result of the act of adjustment is called
  ক

  response

  খ

  command

  গ

  process control

  ঘ

  process controller
• From the given data calculate the constant of proportionality. s = 10mm, Ss = 5mm θ=50 degrees and θs = 45 degrees.
  ক

  1

  খ

  -1

  গ

  1/2

  ঘ

  -1/2
• Constant of proportionality is always positive.
  ক

  True

  খ

  False
• Synthesis of mechanism is used to determine the acceleration of the link.
  ক

  True

  খ

  False
• What is the unit of constant of proportionality C used in the relation between displacement of slider and crank angle?
  ক

  m/rad

  খ

  m/s-rad

  গ

  m-s/rad

  ঘ

  m/s2
• Which of the following is true regarding synthesis of mechanisms?
  ক

  It determines the dimensions of the link

  খ

  It determines the input and output angles of the links

  গ

  It determines velocity of link

  ঘ

  It determines acceleration of link
• What is the relation between displacement of slider and crank angle over an interval?
  ক

  Quadratic

  খ

  Directly proportional

  গ

  Linear

  ঘ

  Inversely proportional
• If the crank rotation angle varies from 45 degrees to 135 degrees, Using three precision points with chebyshev’s spacing, synthesize a slider crank mechanism where where displacement of slider is square of the crank rotation. From the above information calculate ‘b’ in mm.
  ক

  148.2

  খ

  158.2

  গ

  135.7

  ঘ

  120.2
• If the crank rotation angle varies from 45 degrees to 135 degrees, Using three precision points with chebyshev’s spacing, synthesize a slider crank mechanism where where displacement of slider is square of the crank rotation. From the above information calculate ‘c’ in mm.
  ক

  148.2

  খ

  158.2

  গ

  135.7

  ঘ

  120.2
• If the crank rotation angle varies from 45 degrees to 135 degrees, Using three precision points with chebyshev’s spacing, synthesize a slider crank mechanism where where displacement of slider is square of the crank rotation. From the above information calculate ‘a’ in mm.
  ক

  48.2

  খ

  58.2

  গ

  45.6

  ঘ

  42.2
• Which method is used in the synthesis of function generation?
  ক

  Overlay method

  খ

  Klein’s method

  গ

  Chebychev’s inequality

  ঘ

  Freudenstein’s equation