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Directions to Solve

Each sentences below consist of a word or a phrase which is bold. It is followed by four words or phrases. Select the word or pharse which is closes to the OPPOSITE in meaning of the bold word or phrase.

Q1: The members thought that the task was feasible.

A impractical

B impracticable

C difficult

D impossible

Q2:
The modulus operator cannot be used with a long double.

A False

B True

Q3: An astable multivibrator requires:

A balanced time constants

B no input signal

C dual J-K flip-flops

D a pair of matched transistors

Q4: A crystal demonstrates the ________ effect when a mechanical force across the crystal causes a small voltage to be generated.

A photoelectric

B Co-pitts

C flywheel

D piezoelectric

Q5: What is the difference between an astable multivibrator and a monostable multivibrator?

A The monostable is free running.

B none of the above

C The astable is free running.

D The astable needs to be clocked.

Q6: Is there any limit to the number of times that a 74123 can be retriggered?

A no

B yes

Q7:
Determine tHI and tLO for the circuit given below.

A tHI = 3.21 s, tLO = 3.97 s

B tHI = 6.24 s, tLO = 7.95 s

C tHI = 7.95 s, tLO = 6.24 s

D tHI = 3.97 s, tLO = 3.21 s

Q8: The output of the astable circuit ________.

A constantly switches between two states

B is HIGH until a trigger is received

C floats until triggered

D is LOW until a trigger is received

Q9:
If a diode is connected across resistor RB (positive end up) in the given figure, what is the new duty cycle of the output waveform?

A 17.4%

B 21.6%

C 44%

D 56%

  

Q10: Seasoning of timber is essential to remove

A knots from timber

B sap from timber

C twisted fibre from timber

D roughness of timber.