A transformer has 400 primary turns and 100 secondary turns. If primary voltage is 220 V, secondary voltage is MCQ with Answer and Explanation

Explanation:
R_t = R₀(1+α t) = 10(1+0.004×100) = 10(1.4) = 14 Ω.

Explanation:
Enrico Fermi led the team that constructed 'Chicago Pile-1', which achieved the world's first artificial, self-sustaining nuclear chain reaction on December 2, 1942. This was the first nuclear reactor. While he worked on the Manhattan Project (atomic bomb), his crowning individual distinction is creating the first controlled reactor.

Explanation:
Mercury has uniform thermal expansion, visible, high boiling point (357°C). Does not wet glass.