Final answer:
The third type of commonly used torque wrench, besides micrometer setting and dial indicating wrenches, is the deflecting beam wrench. Torque wrenches are used for precise tightening of components in mechanical systems.
Step-by-step explanation:
The three most commonly used torque wrenches are the micrometer setting, dial indicating, and deflecting beam types. Choice c) Deflecting Beam is the correct option besides the micrometer setting and dial indicating types. Torque wrenches, including the deflecting beam type, are crucial in mechanical applications requiring precise application of torque to ensure the correct functioning and safety of mechanical systems.
For example, when a mechanic tightens the cylinder head bolts on a car to a torque of 62.0 N.m using a wrench of length 20 cm, they must exert a perpendicular force at the end of the wrench to achieve the desired torque. This illustrates the principle of torque, which involves the turning or twisting effectiveness of a force, and is vital in various mechanical and engineering contexts.