Physics General Science Test Hard Mode

Sr. #	Questions	Answers Choice
1	In an L-R circuit time constant is that time in which current grows from zero to the value	0.63 I<sub>o</sub> <span style="font-size: 14.44444465637207px;">0.50 I</span><sub>o</sub> <span style="font-size: 14.44444465637207px;">0.73 I</span><sub>o</sub> <span style="font-size: 14.44444465637207px;">I</span><sub>o</sub>
2	The average power dissipation in a pure capacitor in AC circuit is	1/2 CV<sup>2</sup> CV<sup>2</sup> 2CV<sup>2</sup> Zero
3	Which quantity is increased in step-down transformer?	Current Voltage Power Frequency
4	The primary winding of transformer has 500 turns whereas its secondary has 5000 turns The primary is connected to an a.c supply of 20 V, 50 Hz The secondary will have an output of	200 V, 50 Hz 2 V, 50 Hz 200 V, 500 Hz
5	In an ac circuit with voltage V and current 1 the power dissipated is	VI 1/2 VI 1/√2 VI Depends on the phase between V and 1

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