Electronics and Communication Engineering - Electronic Devices and Circuits
Exercise : Electronic Devices and Circuits - Section 7
- Electronic Devices and Circuits - Section 13
- Electronic Devices and Circuits - Section 24
- Electronic Devices and Circuits - Section 23
- Electronic Devices and Circuits - Section 22
- Electronic Devices and Circuits - Section 21
- Electronic Devices and Circuits - Section 20
- Electronic Devices and Circuits - Section 19
- Electronic Devices and Circuits - Section 18
- Electronic Devices and Circuits - Section 17
- Electronic Devices and Circuits - Section 16
- Electronic Devices and Circuits - Section 15
- Electronic Devices and Circuits - Section 14
- Electronic Devices and Circuits - Section 1
- Electronic Devices and Circuits - Section 12
- Electronic Devices and Circuits - Section 11
- Electronic Devices and Circuits - Section 10
- Electronic Devices and Circuits - Section 9
- Electronic Devices and Circuits - Section 8
- Electronic Devices and Circuits - Section 7
- Electronic Devices and Circuits - Section 6
- Electronic Devices and Circuits - Section 5
- Electronic Devices and Circuits - Section 4
- Electronic Devices and Circuits - Section 3
- Electronic Devices and Circuits - Section 2
41.
A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,
Answer: Option
Explanation:
Let 6 bit required = 26 = 64, which indicate 64 increment.
If 7 bit = 27 = 128, for 100 increment, 7 bit required.
42.
A 4 bit transistor register has output voltage of high-low-high-low. The binary number stored and its decimal equivalent are
Answer: Option
Explanation:
1010 in binary and 8 + 2 = 10 in decimal.
43.
Assertion (A): A demultiplexer cannot be used as a decoder
Reason (R): A multiplexer selects one of many outputs whereas a decoder selects on output corresponding to coded input.
Answer: Option
Explanation:
Demux can be used as a decoder.
44.
Hexadecimal number F is called to octal number
Answer: Option
Explanation:
F = 15 in decimal notation = 17 in octal notation (8 + 7 = 15).
45.
A half adder can be used only for adding
Answer: Option
Explanation:
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