If the input to the circuit of figure is a sine wave the output will be

1.   A half-wave rectified sine wave

2.  A full-wave rectified sine wave

3.  A triangular wave

4.  A square wave

View Answer  
4
Correct Answer :

A square wave


Explanation :
No Explanation available for this question

Dual slope integration type Analog-to-Digital converters provide

1.  Higher speeds compared to all other types of A/D converters

2.  Very good accuracy without putting extreme requirements on component stability

3.  Poor rejection of power supply him

4.  Better resolution compared to all other types of A/D converters for the same number of bits.

View Answer  
4
Correct Answer :

Very good accuracy without putting extreme requirements on component stability


Explanation :
No Explanation available for this question

In a 4-bit weighed resistor D/A converter, the resistor value corresponding to LSB is 32-k ohm. The resistor value corresponding to MSB will be

1.  32 k-ohm

2.  16 k-ohm

3.   8 k-ohm

4.  4 k-ohm

View Answer  
4
Correct Answer :

4 k-ohm


Explanation :
No Explanation available for this question

For a dual ADC type 3 ½ digital DVM, reference voltage is 100 mV and first integration time is set 300 ms. For some input voltage deintegration period is 370.2 ms. The DVM will indicate

1.  123.4

2.  199.9

3.  100.0

4.  1.414

View Answer  
4
Correct Answer :

123.4


Explanation :
No Explanation available for this question

The inverting Op-Amp shown in the figure has an Open-loop gain of 100. The closed loop gain V0/Vs is

1.   -8

2.  -9

3.  -10

4.   -11

View Answer  
4
Correct Answer :

-9


Explanation :
No Explanation available for this question

A dual-slope analog to digital converter uses an N-bit counter. When input signal Va is being integrated, then counter is allowed to count up to a value

1.  Equal to 2N -2

2.  Equal to 2N -1

3.  Proportional  to Va

4.  Inversely proportional to Va

View Answer  
4
Correct Answer :

Inversely proportional to Va


Explanation :
No Explanation available for this question

The simplified block diagram of a 10-bit A/D converter of dual slope integrator type is shown in the given figure. The 10-bit counter at the output is clocked by a 1 MHz clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this A/D converter is approximately

1.  2 KHz

2.  1 KHz

3.  500 Hz

4.  250 Hz

View Answer  
4
Correct Answer :

1 KHz


Explanation :
No Explanation available for this question

What overall accuracy could one reasonably expect from construction of a 10 bit A/D converter

1.  0.1%

2.  0.2%

3.  0.3%

4.  0.4%

View Answer  
4
Correct Answer :

0.2\%


Explanation :
No Explanation available for this question

A 5 bit D/A converter has a current output for a digital input of 10100. If an output current of 10 m A is produced. What will Iout be for a digital input of 11101

1.  12.5 mA

2.  13.5 mA

3.  14.5 mA

4.   15.5 mA

View Answer  
4
Correct Answer :

14.5 mA


Explanation :
No Explanation available for this question

In the figure assume the Op-Amps to be ideal. The output V0 of the circuit is

1.   10 cos (100 t)

2.  

3.  

4.  10-4 d/dt cos(100t)

View Answer  
4
Correct Answer :

 10 cos (100 t)


Explanation :
No Explanation available for this question
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