guessing paper for EEM SUBJECT

Sub-EEM  Sub code- 17322    Max  mark 25       Time 1Hr

Que 1. Attempt any three (3*3=9M)

1) explain causes of error in CT.

2) give any four difference between ammeter and voltmeter.

3) give difference between moving coil and moving iron instrument.

4)Explain extension of ac voltmeter.

Que 2. Attempt any two (4*2=8M)

1) Explain working of PMMC with neat sketch.

2) explain extension of DC ammeter and calculate the resistance.

3) explain the calibration process of ammeter.

Que 3. Attempt any two(4*2=8M)

1) draw the neat sketch of repulsion type MI instrument.

2) A moving coil instrument gives a full scale deflection of 10 mA when the potential difference across its terminals is 100 mV. Calculate

i) Shunt resistance for a full scale deflection corresponding to 100 Amp.

ii) Series resistance for full scale reading with 1000 Volt.

iii) power through each resistance.

3) explain extension and calculation of resistance of dc  voltmeter.