The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke (θ) is equal to
90° and 180°
45° and 225°
180° and 270°
270° and 360°
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- Which of the following statement is wrong?
- Which of the following is an example of a higher pair?
- For the brake to be self locking, the force P at C shown in the below figure, should
- In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be
- The ratio of maximum fluctuation of speed to the mean speed is called
- A cam mechanism imparts following motion
- When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in…
- The driving and driven shafts connected by a Hooke's joint will have equal speeds, if
- The maximum efficiency of a screw jack is
- The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because
- There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20,…
- In higher pair, the relative motion is
- In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance…
- The lower pairs are __________ pairs.
- The critical speed of a shaft in revolution per second is __________ as that of natural frequency of…
- It is required to connect two parallel shafts, the distance between whose axes is small and variable.…
- The mechanism in which two are turning pairs and two are sliding pairs, is called a
- Which of the following is a higher pair?
- In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient…
- One end of a helical spring is fixed while the other end carries the load W which moves with simple…
- Bifilar suspension method is used to find the
- Sensitiveness of the governor is defined as the ratio of the
- In a pantograph, all the pairs are
- Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open…
- The amplitude of vibration is always __________ the radius of the circle.
- The static friction
- Which of the following is used to control the speed variations of the engine caused by the fluctuations…
- The size of a gear is usually specified by
- The periodic time of a compound pendulum is __________ when the distance between the point of suspension…
- Which of the following statement is correct as regard to the difference between a machine and a structure?