# Analog Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 216 - 219 of 249

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## Question 216

Appeared in Year: *2015*

### Question

MCQ▾In the circuit shown, diodes and , are ideal, and the inputs and are ‘’ for logic ‘’ and ‘’ for logic ‘’ . What logic gate does the circuit represent?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 3 input OR gate | |

b. | 3 input NOR gate | |

c. | 3 input XOR gate | |

d. | 3 input AND gate |

## Question 217

Appeared in Year: *2019*

### Question

Numeric Answer▾In the circuit shown, is a square wave of period, with R = 500 Ω and . The capacitor is initially uncharged at , and the diode is assumed to be ideal. The voltage across the capacitor at is equal to ________volts (rounded off to one decimal place) .

## Question 218

Appeared in Year: *2017*

### Question

MCQ▾The signal , where t is in seconds, is sampled at a rate of 9000 samples per second. The sampled signal is the input to an ideal lowpass filter with frequency response as follows:

What is the number of sinusoids in the output and their frequencies in ?

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 219

Appeared in Year: *2019*

### Question

Numeric Answer▾In the circuit shown, the threshold voltages of the and transistors are both equal to . All the transistors have the same output resistance of 6 MΩ. The other parameters are listed below:

and are the carrier mobilities, and is the oxide capacitance per unit area. Ignoring the effect of channel length modulation and body bias, the gain of the circuit is________ (rounded off to 1 decimal place) .