1
GATE EE 2003
+2
-0.6
The simplified block diagram of a $$10$$bit A/D converter of dual slope integrator type is shown in fig. The $$10$$-bit counter at the output is clocked by a $$1MHz$$ 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.
A
$$2$$ $$kHz$$
B
$$1$$ $$kHz$$
C
$$500Hz$$
D
$$250Hz$$
2
GATE EE 1999
+2
-0.6
For a dual $$ADC$$ type $$3\,\,{1 \over 2}$$ digit $$DVM$$, the reference voltage is $$100mV$$ and the first integration time is set to $$300$$$$ms$$. For some input voltage, the ''deintegration'' period is $$370.2ms$$. The $$DVM$$ will indicate
A
$$123.4$$
B
$$199.9$$
C
$$100.0$$
D
$$1.414$$
3
GATE EE 1998
+2
-0.6
The figure shows input attenuator of a multimeter. The meter reads full-scale with $$12$$ $$V$$ at $$M$$ with the rage switch at position $$B$$ obtain full-scale deflection with the range switch position at $$D?$$
A
$$1$$ $$V$$
B
$$150$$ $$V$$
C
$$120$$ $$V$$
D
$$147$$ $$V$$
4
GATE EE 1992
Numerical
+2
-0
In a dual slope integrating type digital voltmeter the first integration is carried out for $$10$$ periods of the supply frequency of $$50Hz.$$ If the reference voltage used is $$2V,$$ the total conversion time for an input $$1$$ $$V$$ is _________ sec