(a) What is the difference between precision and accuracy? [2 marks] (b) How can random errors be minimised when collecting experimental data? [3 marks] (c) A strain gauge has a nominal resistance of 150 and a gauge factor of 2.5. It is used in a quarter bridge with other resistors, also with a nominal resistance of 150 , and a 5 V supply voltage. (i) Determine the strain if the output voltage is 15 mV. (ii) State TWO possible sources of error with the strain measurement. [8 marks] (d) Explain, with the aid of diagrams, the operation of two different pressure transducers, one which uses strain gauges and one which does not