GATE ECE 1992 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1992

MCQ (Single Correct Answer)

-0.6

An n-channel JFET has a pinch-off voltage of V_p = -5V. V_DS(max) = 20V and g_m = 2mA/V. The minimum 'ON' resistance is achieved in the JFET for

$${V_{GS}} = -7V$$ and $${V_{DS}} = 0V$$

$${V_{GS}} = 7V$$ and $${V_{DS}} = 0V$$

$${V_{GS}} = 0V$$ and $${V_{DS}} = 20V$$

$${V_{GS}} = -7V$$ and $${V_{DS}} = 20V$$

GATE ECE 1992

MCQ (Single Correct Answer)

-0.6

An Op-Amp has an offset voltage of 1mV and is ideal in all other respects. If this OP-Amp is used in the circuit shown in fig. The O/P voltage will be (Select the nearest value). GATE ECE 1992 Analog Circuits - Operational Amplifier Question 66 English

GATE ECE 1992 Analog Circuits - Operational Amplifier Question 66 English

1 mV

1 V

$$ \pm $$ 2 mV

0 V

GATE ECE 1992

MCQ (Single Correct Answer)

-0.6

Source encoding in a data communication system is done in order to

enhance the information transmission.

band pass filters and envelope rate detectors.

conserve the transmitted power.

discriminator detection.

GATE ECE 1992

MCQ (Single Correct Answer)

-0.6

The bit stream 01001 is differentially encoded using 'Delay and Ex OR' scheme for DPSK transmission. Assuming the reference bit as a '1' and assigning phases of '0' and '$$\,\pi $$' for 1's and 0's respectively, in the encoded sequence, the transmitted phase sequence becomes

$$\,\pi $$ 0$$\,\pi $$ $$\,\pi $$ 0

0 $$\,\pi $$ $$\,\pi $$ 0 0

0 $$\,\pi $$ $$\,\pi $$ $$\,\pi $$ 0

$$\,\pi $$ $$\,\pi $$ 0$$\,\pi $$ $$\,\pi $$

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