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InsemSep 20242019 patternBE Mech

Dynamics of Machinery SPPU Insem Question Paper Sep 2024

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Dynamics of Machinery questions
Subject code
402042
Pattern
2019 pattern
Exam
Insem
Session
Sep 2024
Max. marks
30
Time
1 Hour 15 Min.
Semester
VII
Paper code
[6361]-55

Printed for: B.E. (Mechanical) (Insem)

Instructions to the candidates

  1. Answer Q.No.1 or Q.No.2, Q.No.3 or Q.No.4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      What is balancing? Why there is the need of Balancing?

      [5]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]

  2. Q2

    1. a)

      Explain the concept of Balancing of several masses rotating in different planes?

      [5]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]

  3. Q3

    1. a)

      What are different applications of gyroscope?

      [5]
    2. b)

      Ship is propelled by turbine having mass of 5000kg and speed of 2200rpm. The direction of rotar is anticlockwise as viewed from bow end. The radius of gyration is 400mm. Determine gyroscopic effect when i) Ship is steering to left in curve of 50m radius at speed of 15 knots (Take 1 knot = 1800m/hr) ii) Ship is pitching in SHM with bow descending with maximum velocity. The time period of pitching is 16 seconds and ship pitches 8º and 8º below the normal position. iii) Ship is rolling and at instant its angular velocity 0.04 rad/sec counter clockwise when viewed from stern.

      Also asked:Aug 2025

      [10]

  4. Q4

    1. a)

      Sate the principal gyroscope? Write note on gyroscopic effect on pitching of a ship?

      [5]
    2. b)

      A disc of mass 10kg and of radius of gyration of 80mm is mounted centrally on a horizontal shaft of 100mm length between the bearings. The disc is spinning about the axis of the shaft at 600 rpm anticlockwise, when viewed from the right-hand side bearing. The shaft processes about a vertical axis at 35 rpm in the clockwise direction when observed from the top. Determine the resultant reaction at each bearing due to the mass and the gyroscopic effect. … … …

      [10]