1. Consider the Grubler’s criteria for the planar mechanism as f=3(n-1)-2l-h What does l represent in the above equation ?

Number of lower pairs

Number of links

Length of the longest links

Number of mobile links

Answer: Number of lower pairs

Explanation:


2. An engine, as the prime mover must have both flywheel and a governor provided in the system for which of the following purposes ?

For increasing the speed

For minimizing the speed fluctuations

For maximizing the speed fluctuations

None of these

Answer: For minimizing the speed fluctuations

Explanation:


3. What kind of motion will crank and slotted lever mechanism will produce ?

Oscillating motion

Rotatory motion

Translating motion

Zigzag motion

Answer: Oscillating motion

Explanation:


4. The beam engine is the inversion of ________ ?

four bar link chain

double slider crank chain

single slider crank mechanism

None of these

Answer: four bar link chain

Explanation:


5. Which of the following is the CORRECT reason for the creep in a belt drive ?

Elongation of belt due to tension

Plasticity of belt material

Elongation of belt material

Differential elongation of belt due to difference in tension on two sides of pulley

Answer: Differential elongation of belt due to difference in tension on two sides of pulley

Explanation:


6. Which equation defines the coefficient of fluctuation ?

Maximum fluctuation x mean speed

Maximum fluctuation + mean speed

Maximum fluctuation / mean speed

Maximum fluctuation - mean speed

Answer: Maximum fluctuation / mean speed

Explanation:


7. Which of the following clutch is also considered as the wet clutch ?

Single plate clutch

Multi-plate clutch

Both Single plate clutch and Multi-plate clutch

None of these

Answer: Multi-plate clutch

Explanation:


8. Which of the following equation correctly represents the sensitiveness of the governor ?

Range of Speed/ 2 x Mean speed

2 x Range of Speed/Mean speed

Range of Speed/Mean speed

Range of Speed=Mean speed

Answer: Range of Speed/Mean speed

Explanation:


9. The double slider crank chain consists of ________ ?

one turning and one sliding pair

two turning and one sliding pair

three turning pair

two turning and two sliding pair

Answer: two turning and two sliding pair

Explanation:


10. If there is no slip and the creep in the transmission, then what is the equation for the velocity ratio in the open belt drive ?

N1/D1=N2/D2

N1/D1=D2/N2

N1/N2=D2/D1

None of these

Answer: N1/N2=D2/D1

Explanation: