Tesla coil is used for a generation of sinusoidal

8. Tesla coil is used for
(a) generation of sinusoidal output voltages
(b) generation of very high voltages
(c) generation of rectangular voltages
(d) generation of high frequency ac voltages
9. Time to front of a impulse voltage wave-form is defined as
10. The approximate value of time to front in an impulse voltage generator is

1
1
11. An impulse voltage generator has a generator capacitance of 0.01 μF, load capacitance of 1 nF,
front resistance of R
1
= 110 Ω and tail resistance of R
2
= 400 Ω. The tail time is
s
s
s
s
12. The value of charging voltage used in a medium-size impulse generator is
(a) 10 to 50 kV
(b) 50to100kV
(c) 500 kV
(d) any value
13. The voltage efficiency of a normal impulse generator for generation of switching impulses is
14. A 16-stage impulse voltage generator has stage capacitance of 0.125
μ F and a charging voltage of
200 kV. The energy rating in kJ is
15. In an impulse current generator the capacitors are connected in
16. Multi test kits used in high-voltage laboratories consist of
(a) ac, dc and impulse voltage test units
(b) ac and dc test units
(c) dc and impulse test units
(d) ac, dc impulse voltage and current test units
17. Impulse current generator output wave-form is
18. To minimise the inductance in impulse current generator circuits