# GATE (Graduate Aptitude Test in Engineering) Instrumentation: Questions 65 - 68 of 85

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## Question 65

Appeared in Year: *2014*

### Question

MCQ▾Assuming an ideal op-amp in linear range of operation, the magnitude of the transfer impedance in of the current to voltage converter shown in the figure is ________.

### Choices

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

a. | 0.4 | |

b. | 0.7 | |

c. | 0.5 | |

d. | 0.6 |

## Question 66

Appeared in Year: *2014*

### Question

MCQ▾In the circuit shown in the figure, initially the capacitor is uncharged. The switch ‘S’ is closed at . Two milliseconds after the switch is closed, the current through the capacitor (in mA) is________.

### Choices

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

a. | 4.54 | |

b. | 3.53 | |

c. | 2.52 | |

d. | 1.51 |

## Question 67

Appeared in Year: *2014*

### Question

MCQ▾In the figure, transistors and have identical characteristics. Of transistor is the voltage is high enough to put in saturation. Voltage of transistors is 0.7V. The value of in V is________.

### Choices

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

a. | 3.45 | |

b. | 1.24 | |

c. | 5.68 | |

d. | 6.89 |

## Question 68

Appeared in Year: *2013*

### Question

MCQ▾In the feedback network shown below, if the feedback factor K is increased, then the

### Choices

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

a. | Input impedance increases and output impedance also increases | |

b. | Input impedance decreases and output impedance increases | |

c. | Input impedance decreases and output impedance also decreases | |

d. | Input impedance increases and output impedance decreases |