12) A man has Rs.480 in the denominations of one rupee notes, five rupee notes and ten rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has?

13) If the resistance of a 125 Ohm strain gauge changes by 1 ohm for 4000 micro strai, then the gauge factor is

14) When a resistor of value 100 Ohm is measured with a DMM, it consistently reads 90.23 Ohm The instrument is

15) The gain bandwidth product for an Operational amplifier is 1MHz. The gain of the Operational amplifier at 1 kHz is

16) In a three phase power measurement by two wattmeter method, if both the watt meters have identical reading, the power factor of the load is