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A dynamometer is a device used to measure torque absorbed or torque transmitted by rotating member. It helps to determine power produced or absorbed or delivered by rotating shaft.

Q Meter equipment is basically meant for measuring the quality factor or circuit magnification factor of coils. Apart from this, it is also used to measure the self-capacitance of RF coils, capacitance of small capacitors. Fig. 1 shows the pictorial view of a Q-meter.

The standard signal generator is a very useful instrument that is commonly used for testing and alignment of radio receivers. Fig. 1: Block Diagram of Standard Signal Generator.

An audio signal generator is a laboratory instrument that is commonly used for testing of Audio circuits. Fig. 1: Block Diagram of an Audio Signal Generator.

The function generator is versatile instrument that gives a number of different waveforms at the output with their frequencies that can be adjusted over a wide range.

Figure 1: Pressure Thermometer.