The expected answers were:

1. Any two of the instruments stated below

1. Moving-coil
2. Moving-iron
3. Multimeter
4. Insulation Resistance Meter
5. Ohmmeter
6. Wattmeter
7. Watt-hour meter

1. (i)  20 x 10-3 x 10 =  9.98 x Rsh                                                        

               Rsh = 0.020 Ω

(ii)
                            
                             20 x 10-3(10 + R) = 10                                 
              R  = 500 – 10 = 490 Ω     

 The question was on Measuring Instruments. It was very popular with the candidates. Many candidates that attempted this question performed well.