GATE Physics Quiz Questions and Answers - 1
Question: 1
When a coil is rotated in magnetic field, induced current is generated in the coil. This principle is used in making
(A) Electric watt meter
(B) Electric generator
(C) Electric motor
(D) Electromagnet
Ans: B
Electric generator
Question: 2
Among the various allotropes of carbon
(A) Coke is the hardest, graphite is the softest
(B) Diamond is the hardest, graphite is the softest
(C) Diamond is the hardest, coke is the softest
(D) Diamond is the hardest, lamp black is the softest
Ans: B
Diamond is the hardest, graphite is the softest
Question: 3
The two elements that are frequently used for making transistors are
(A) Niobium and columbium
(B) Iridium and tungsten
(C) Boron and aluminium
(D) Silicon and germanium
Ans: D
Silicon and germanium
Question: 4
An ant can see the object all round it due to the presence of
(A) Well developed eyes
(B) Eyes over the head
(C) Simple eyes
(D) Compound eyes
Ans: D
Compound eyes
Question: 5
Type of signaling used in electronic exchange is
(A) Pulse signaling
(B) Tone signaling
(C) Both A and B
(D) None of these
Ans: C
Both A and B
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