Multivibrators » Exercise – 1
1. A bistable multivibrator is a :
(a) free running oscillator
(b) triggered oscillator
(c) saw tooth wave generator
(d) crystal oscillator
2. When a sinusoidal voltage wave is fed to a Schmitt trigger, the output will be :
(a) triangular wave
(b) asymmetric square wave
(c) rectangular wave
(d) trapezoidal wave
3. ………….. multivibrator is a square wave oscillator.
(a) monostable
(b) astable
(c) bistable
(d) none of the above
4. An astable multivibrator has …………..
(a) one stable state
(b) two stable states
(c) no stable state
(d) none of the above
5. If d.c. supply of 10 V is fed to a differentiating circuit, then output will be …………..
(a) 20 V
(b) 10 V
(c) 0 V
(d) none of the above
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- Wave Shaping Circuits » Exercise - 1 1. If the input to a differentiating circuit is a saw-tooth wave, then output will be .............. wave. (a) square (b) triangular (c) sine (d) rectangular 2. If a square wave is fed to a differentiating circuit, the output will be .............. (a) sine wave (b) sharp narrow pulses (c) rectangular wave (d) triangular wave 3. An integrating circuit is a simple RC series circuit with output taken across .............. (a) both R and C (b) R (c) C (d) none of the above 4. For an integrating circuit to be effective, the RC product should be .............. the time period of the input wave. (a) 5 times greater than (b) 5 times smaller than (c) equal to (d) atleast 10 times greater than 5. A differentiating circuit is a simple RC circuit with output taken across .............. (a) R (b) C (c) both R and C (d) none of the above