SSC JE Electrical Engineering 25th Jan 2018 Shift-2
Instructions
For the following questions answer them individually
Question 143
In 'two-wattmeter method' of power calculation of a 3-phase balanced star connected system, whatis the power factor of the system if both the wattmeters showa positive reading?
Question 144
A resistance of 75 Ohms is connected in shunt of a galvanometer, having an internal resistance of 25 Ohms,to convert it into an ammeter. What is the value of current (in A) flowing through the galvanometer,if the total current in the circuit is 5 A?
Question 147
Which of the following materials when used as the viewing surface of a CRO gives a reddish glow?
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