Threshold voltage for switching in Schmitt trigger is determined by _______________

The CREATE TRIGGER statement is used to create the trigger. THE _____ clause specifies the table name on which the trigger is to be attached. The ______ specifies that this is an AFTER INSERT trigger.

A

for insert, on

B

On, for insert

C

For, insert

D

None of the mentioned

What happens if the threshold voltages are made longer than the noise voltages in schmitt trigger?

A

All the mentioned

B

Enhance the output signal

C

Reduce the transition effect

D

Eliminate false output transition

When a sinusoidal voltage wave drives a Schmitt Trigger, the output is a:

A

Triangular wave

B

Rectified sine wave

C

Rectangular wave

D

Trapezoidal wave

Calculate the hysteresis voltage for the schmitt trigger from the given specification: R2 =56kΩ , R1 = 100Ω ,Vref = 0v & Vsat = ±14v.

A

0 mv

B

25 mv

C

50 mv

D

-25 mv

Consider the following statements for public circuit-switching network: 1. Private branch exchange (PBX) is an application of circuit switching. 2. A switching centre that directly supports subscribers in known as digital PBX. 3. The link between the subscriber and the network, is also referred to as the local loop. Which of the above statements are correct?

A

1 and 2 only

B

1 and 3 only

C

1, 2 and 3

D

2 and 3 only

Hysteresis is desirable in Schmitt-trigger, because

A

Energy is to be stored/discharged in parasitic capacitances.

B

Effects of temperature would be compensated.

C

Devices in the circuit should be allowed time for saturation and desaturation.

D

It would prevent noise from causing false triggering.

The Schmitt trigger circuit is a modification of which of the following multivibrators?

A

Universal multivibrator

B

Astable multivibrator

C

Bistable multivibrator

D

Monostable multivibrator

In order to generate a square wave from a sinusoidal input signal, one can use 1. Schmitt trigger circuit 2. Clippers and amplifiers 3. Monostable multivibrator Which of the above statements are correct?

A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

Which of the following statements are correct? (a) CMOS has a higher speed and smaller power than BJT. (b) CMOS ICs inputs should never be left unconnected as it may damage the device. (c) CMOS ICs with Schmitt trigger inputs are useful for better noise immunity. (d) CMOS is most popular logic family in VLSI Technology.

A

(a), (c) and (d) are correct

B

(b), (c) and (d) are correct

C

(a), (b) and (c) are correct

D

(a), (b) and (d) are correct

For which of the following functions can a Schmitt trigger be used?

A

Pulse shaping

B

Blocking

C

Amplification

D

Filtering

Threshold voltage for switching in Schmitt trigger is determined by _______________

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