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Q. What is DTMF dialling?
DTMF dialling
1. Uses push buttons
2. Uses 8 different frequencies in pairs.
3. 16 different characters can be represented.
4. The frequencies used prevent generating of harmonics.
5. Each number is represented by a high signal & low signal=
Q. What is Idss. What are the conditions for its maximum value? The term 'Idss' refers to saturation condition of the Drain current. From the above graph it's clear that as the
Q. Working of Microprocessor Control? The microprocessor, which has rapidly become a key component in digital control systems, and its associated circuits function as the digit
Explain BIOS The IBM PC has in its ROM a collection of routines, each of which performs some particular function such as reading a character from keyboard, writing character to
Q. What are transistor amplifiers? What is meant by efficiency of an amplifier? What is amplifier coupling? The AMPLIFIER is a device that enables an input signal to control an
Q. The self and mutual inductances of a machine with two windings are given by L 11 = (1 +sin θ), L 22 = 2(1 + sin θ), and L 12 = L 21 = M = (1-sin θ). Assuming θ = 45°, and le
Explane pn junction
Q. The external - characteristics data of two shunt generators in parallel are given as follows: Load Current, A: 0 5 10 15 20 25 30 Terminal voltage I, V: 270 263 254 240 22
Explain the term full duplex transmission. Data can travel in both directions concurrently. There is no require to switch from transmit to receive mode as in half duplex. It's
Q. What is meant by regulation? The output of most power supplies should be a constant voltage. Unfortunately, this is difficult to achieve. There are two factors that can caus
Organisational Trends: 1 Organisations are economic and social entities in which a number of persons perform multifarious tasks in order to attain common goals. Four key organ
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