Question 11 : Which of the following have a 16-bit digital dynamic range?
1. PCM
2. DPCM
3. linear codec
4. logarithmic codec
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Question 12 : Which of the following determines the brightness of LEDs?
1. current
2. voltage
3. resistance
4. conductance
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Question 13 : Which of the following can generate an interrupt?
1. timer
2. trigger
3. delay
4. counter
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Question 14 : Which devices have high drive capability?
1. transistor
2. fet
3. buffer pack
4. darlington amplifier
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Question 15 : How is the biasing done in LEDs?
1. forward bias
2. no bias
3. supply voltage
4. reverse bias
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Question 16 : Which of the following can provide a speed control technique in the DC motor interfacing?
1. PCM
2. DPCM
3. ADPCM
4. PWM
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Question 17 : Which allows the switching of DC motor by using two outputs and four FETs?
1. transistor
2. H bridge
3. darlington pair
4. buffer pack
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Question 18 : Which of the following allows voltage reversing?
1. H bridge
2. Relays
3. LEDs
4. LCDs
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Question 19 : Which factor depends on the quantisation error?
1. number of error
2. number of bits
3. size of error
4. conversion process
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Question 20 : Which of the following is used to avoid the back EMF in the relay?
1. resistor
2. capacitor
3. inductor
4. diode
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