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Multiple Choice Question (MCQ) of Battery page-12


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111. The power lost in battery was nearly

A) 86 watts
B) 43 watts
C) 8.6 watts
D) 4.3 watts

Ans : (C)

112. The useful power as

A) 10.6 watts
B) 14.2 watts
C) 21.1 watts
D) 28.6 watts.

Ans : (D)

113. The efficiency of battery was nearly

A) 88 %
B) 77 %
C) 66 %
D) 55 %

Ans : (B)

114. The short circuit current is nearly

A) 73.3 A
B) 66.1 A
C) 55.2 A
D) 44.4 A.

Ans : (A)

115. For chromium plating the current density is usually

A) 30 to 80 amps/m2
B) 300 to 800 amps/m2
C) 100 to 200 amps/m2
D) 1500 to 2500 amps/m2.

Ans : (D)

116. Lowest current density is generally recommended for the plating of

A) Silver
B) Bronze
C) Chromium
D) Cadmium.

Ans : (A)

117. Highest current density is usually recommended for

A) cadmium plating
B) chromium plating
C) tin plating
D) bronze plating.

Ans : (B)

118. All of the following metals are generally deposited for protection EXCEPT

A) Tin
B) Nickel
C) Zinc
D) Gold.

Ans : (D)

119. The temperature recommended for bronze plating is usually

A) 10 to 20°C
B) 20 to 35°C
C) 40 to 60°C
D) 70 to 80°C.

Ans : (D)

120. The best instrument for the measurement of emf of a cell is

A) ammeter
B) potentiometer
C) voltmeter
D) wheatstone bridge.

Ans : (B)


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