Piston velocity (v_p)
: Determining degrees of freedom (Mobility) using Kutzbach and Grubler's criteria.
Solutions require using Kutzbach’s and Grubler's criteria to find the degrees of freedom of planar mechanisms.
"Draw the cam profile for a roller follower with SHM." Solution format: Step 1: Draw base circle. Step 2: Displacement diagram plotting. Step 3: Loci of roller center. Step 4: Pressure angle verification. Good solutions include actual plotted coordinates. theory of machines by rs khurmi exercise solutions
Read the problem carefully. List all given variables and convert them into standard SI units (e.g., convert RPM to rad/s using , and mm to meters).
: Calculating the number of teeth to avoid interference, or finding the speed of a specific gear in an epicyclic train.
acoriolis=2⋅ω⋅va sub c o r i o l i s end-sub equals 2 center dot omega center dot v Gears and Gear Trains Piston velocity (v_p) : Determining degrees of freedom
Two involute gears have module = 5 mm, pressure angle = 20°, number of teeth on pinion = 20, gear = 40. Find addendum, dedendum, pitch circle radii, and path of contact.
University exam papers often source numerical questions directly from Khurmi’s unsolved exercises, sometimes changing only the numerical values.
Velocity of piston = 3.92 m/s (directed from crank end to open end) Step 2: Displacement diagram plotting
By systematically working through the , you can transition from theoretical understanding to practical application, ensuring success in your engineering examinations.
| | Action | |----------|-------------| | 1 | Read the theory in Khurmi for that topic. | | 2 | Try the solved example (within the chapter) yourself first. | | 3 | Pick 2–3 unsolved problems and attempt. | | 4 | Compare your answer with a trusted solution source. | | 5 | If mismatch >10%, re-check your method. | | 6 | For velocity/acceleration diagrams, use graphical method first, then analytical. |