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Some Electrical Engineering questions?
1). The frequency spectrum of an AM-Modulated signal has a carrier at 1 MHz and an upper side-band at 1.01 MHz.
(a). What is the frequency of the message signal?
(b). What is the frequency of the lower side-band?
2). Construct the truth table for a two-input XOR gate.
3). What is the purpose of a sensor?
4). What is the purpose of a actuator?
Please explain,
Thankyou
1 Answer
- JamesLv 69 years agoFavorite Answer
1). The frequency spectrum of an AM-Modulated signal has a carrier at 1 MHz and an upper side-band at 1.01 MHz.
(a). What is the frequency of the message signal? .01Mhz or 10khz
(b). What is the frequency of the lower side-band? 1Mhz - .01 = .99 Mhz
2). Construct the truth table for a two-input XOR gate.
A B F
0 0 0
0 1 1
1 0 1
1 1 0
3). What is the purpose of a sensor? Measures a quantity and changes to a electric signal
4). What is the purpose of a actuator?
To Change and electric signal into a mechnical action
