Computer Programming MCQs

5739 MCQs  (Page 284 of 574)

Negative feedback_______________?
A. Increases the input and output impedances
B. Increases the input impedance and bandwidth
C. Decreases the output impedance and bandwidth
D. Does not affect impedance or bandwidth
Which of the following properties a damping oil must possess ?
A. must be a good insulator
B. should be non-evaporating
C. should not have corrosive action upon the metal of the vane
D. the viscosity of the oil should not change with the temperature
Which of the following essential features is possessed by an indicating instrument ?
A. Deflecting device
B. Controlling device
C. Damping device
D. All of the above
Which of the following devices may be used for extending the range of instruments ?
A. shunts
B. multipliers
C. current transformers
D. potential transformers