The normal voltage for dielectric heating is

The normal voltage for dielectric heating is (a) 1500 V (b) 11 kV (c) 33 kV (d) 66 kV
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Answer :

66kv 
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When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

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Which of the following statements concerning copper wire sized by AWG numbers is correct? A. Number 12 AWG wire has a higher current rating than 10 AWG wire. B. Number 12 AWG wire at 25°C has more resistance per 1000 ft than 10 AWG wire at 25°C. C. Number 10 AWG wire has a higher dielectric strength than 12 AWG wire. D. Number 12 AWG wire is larger than number 10 AWG wire.

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