# GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 886 - 890 of 1076

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## Question 886

Appeared in Year: *2016*

### Question

MCQ▾Let (where I denote the identity matrix) and , , . Then for any natural number k, equals:

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 887

Appeared in Year: *2015*

### Question

MCQ▾The impulse response of an LTI system can be obtained by

### Choices

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

a. | Integrating the unit ramp response | |

b. | Differentiating the unit step response | |

c. | Integrating the unit step response | |

d. | Differentiating the unit ramp response |

## Question 888

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 889

Appeared in Year: *2017*

### Question

Numeric Answer▾For the circuit shown, assume that the NMOS transistor is in saturation. Its threshold voltage and its trans-conductance parameter Neglect channel length modulation and body bias effects. Under these conditions the drain current in mA is …

## Question 890

Appeared in Year: *2016*

### Question

Numeric Answer▾The energy of the signal is …