1) The handle of iron box is made up of
a. Bakelite
b. Ebonite
c. Chromium
d. Only (a) and (b)
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Answer
Explanation
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ANSWER: Only (a) and (b)
Explanation:
No explanation is available for this question!
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2) Buzzer in principle is a bell
a. with hammer
b. with gong
c. with both hammer and gong
d. without hammer and gong
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Answer
Explanation
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ANSWER: without hammer and gong
Explanation:
No explanation is available for this question!
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3) Heating element of electric iron box is an alloy of
a. Copper and nickel
b. Nickel and cobalt
c. Iron and magnesium
d. Nickel and chromium
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Answer
Explanation
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ANSWER: Nickel and chromium
Explanation:
No explanation is available for this question!
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4) Electric heaters is made up of
a. Chromed iron
b. Brass
c. Steel
d. Both (a) and (b)
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Answer
Explanation
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ANSWER: Both (a) and (b)
Explanation:
No explanation is available for this question!
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5) In telegraphic machine, the machine parts that sends the message and the machine parts that receives the message are
a. Morse key, Morse key
b. Morse key, Morse sounder
c. Morse sounder, Morse key
d. Morse sounder, Morse sounder
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Answer
Explanation
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ANSWER: Morse key, Morse sounder
Explanation:
No explanation is available for this question!
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6) Electric bell consists of a
a. Horse shoe type electromagnet
b. Circular electromagnet
c. Rod shaped electromagnet
d. All of these
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Answer
Explanation
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ANSWER: Horse shoe type electromagnet
Explanation:
No explanation is available for this question!
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7) The tube of a tube light is filled with
a. Fluorescent paste
b. Low pressure inert gas
c. Mercury
d. Only (b) and (c)
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Answer
Explanation
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ANSWER: Only (b) and (c)
Explanation:
No explanation is available for this question!
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8) If the length of the filament is increased then the
a. Power also increases
b. Power decreases
c. Required oxygen increases
d. Flow of current increases
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Answer
Explanation
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ANSWER: Power also increases
Explanation:
No explanation is available for this question!
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9) In a gas filled lamp, inert gases are filled in the lamp to
a. Compensate heat losses
b. Minimize the electricity use
c. Increase the brightness
d. None of these
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Answer
Explanation
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ANSWER: Compensate heat losses
Explanation:
No explanation is available for this question!
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10) Electrical energy can be converted into
a. Light energy
b. Electromagnetic energy
c. Electrochemical energy
d. All of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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