A) 4000 A B) 4500 A C) 5000 A D) 5500 A. Ans : (D)
A) 10-6meter B) 10-8 meter C) 10-8 cm D) 10-8 mm. Ans : (C)
A) high efficiency B) high step-up ratio C) high step-down ratio D) high leakage reactance. Ans : (D)
A) argon gas B) neon gas C) nitrogen gas D) krypton gas. Ans : (B)
A) Pink B) Yellow C) Green D) Blue. Ans : (A)
A) Blue B) Yellow C) Violet D) None. Ans : (B)
A) to eliminate corona effects B) to avoid radio interference C) to improve power factor D) to limit current to appropriate value. Ans : (D)
A) increasing the supply voltage B) increasing filament temperature C) increasing glass shell diameter D) none of above. Ans : (C)
A) vapour pressure inside B) exhaust tube diameter C) glass shell diameter D) none of the above. Ans : (A)
A) ozone B) nitrogen C) helium D) oxygen. Ans : (B)