169. For a linear electromagnetic circuit, the following statement is true.

A. Field energy is equal to the co-energy

B. Field energy is greater than the co-energy

C. Field energy is lesser than the co-energy

D. Co-energy is zero

170. The rated voltage of a 3-phase power system is given as

A. rms phase voltage

B. peak phase voltage

C. rms line to line voltage

D. peak line to line voltage

171. The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper tube of 60 mm diameter is

A. 3.2 pH

B.3.2 mH

C. 32.0 mH

D. 3.2 H

172. For a linear electromagnetic circuit, the following statement is true.

A. Field energy is equal to the co-energy

B. Field energy is greater than the co-energy

C. Field energy is lesser than the co-energy

D. Co-energy is zero

173. The rated voltage of a 3-phase power system is given as

A. rms phase voltage

B. peak phase voltage

C. rms line to line voltage

D. peak line to line voltage

174. The RMS value of the voltage u(t) = 3 + 4cos (3t) is

A. .1i77- V

B.5V

C. '7V

D. (3+ 24Y) V

175. A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source v2(t) =3 sin (4t) V. the meter reads

A. 2 V

B.5 V

C. (2 + .&2) V

D. (117/2) V

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