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AE-JE (ME) II Theory of machine Quiz-6

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Question 1

When the relation F_C = ar+b is satisfied for a spring-controlled governor as the relation between controlling force (F_C) and radius of rotation (r). This type of governor is known as

Question 2

Isochronism in a governor is desirable when

Question 3

The example of the Spring-loaded Governor is __________.

Question 4

A governor is said to be hunting if the speed of the engine _________.

Question 5

In a Hartnell governor, the mass of each ball is 4 kg. The maximum and minimum centrifugal forces on the balls are 1800 N and 100 N at radii 25 cm and 20 cm, respectively. The lengths of vertical and horizontal arms of the bell-crank levers are the same. What is the spring stiffness?

Question 6

The governor will ___________.

Question 7

For Hartnell governor, the loads on the spring at the lowest & highest equilibrium speeds are 1200 N & 100 N respectively If the lift of governor is 2cm, then spring stiffness would be

Question 8

Each spring of a Pickering governor of a gramophone is 4 mm wide and 0.15 mm thick with a length of 36 mm. A mass of 50 g is attached to the leaf spring at the centre. Find the deflection of the centre of leaf spring for lift sleeve of 96 μm.

Question 9

When the sleeve of porter governor moves upward, the governor speed.

Question 10

Which one of the following governors is having a larger displacement of sleeve for a given fractional change of speed?

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AE & JE Exams Mechanical Engineering

Mar 28AE & JE Exams