Miscellaneous In Mining - Study Mode

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[#46] Worst disaster caused by inundetion of mines was at chasnala colliery in Bihar in . . . . . . . .

(A) 1976

(B) 1975

(C) 1974

(D) 1977

Correct Answer

(B) 1975

[#47] Find the H.P assistancedue to NVP if the w.g is 12.07 mm of wg and air passing in DC shaft is 100m 3 /sec.

(A) 15.09

(B) 14.08

(C) 16.09

(D) 17.09

Correct Answer

(C) 16.09

[#48] Lumens emitted by a lamp . . . . . . . .

(A) MSCP × 2π

(B) MHCP × 4π

(C) $$frac{{MSCP}}{{4pi }}$$

(D) MSCP × 4π

Correct Answer

(D) MSCP × 4π

[#49] In which of the following Indian mines first refrigeration plant was installed in

(A) Champion reef

(B) Oorgam

(C) Majri

(D) Nudy doorg

Correct Answer

(B) Oorgam

[#50] In oldham cap lamp unit each cell of lead acid battery consists of a number of composite . . . . . . . . tubes.

(A) Lead permanganate

(B) Lead Red Potasium

(C) Lead Antimony

(D) None

Correct Answer

(C) Lead Antimony