25- Zero initial conditions means that the system is:
A:- having no input
B:- at rest with no energy stored
C:- system does not have any storage elements
D:- system has a very low energy stored
26- In a measurement using an instrument with D’Arsonval movement, the friction in the bearings of moving components causes an incorrect reading. This is an example of:
A:- Gross error
B:- Systematic error
C:- Random error
D:- Observational error
27- It is required that in an electrical substation, the voltage of a backup battery bus needs to be continuously monitored for 24 hours daily, and the data need to be used for further analysis. Which type of instrument is most suitable for this application?
A:- A moving coil indicating a voltmeter
B:- A moving iron integrating voltmeter
C:- A recording voltmeter
D:- An electrostatic indicating voltmeter
28- An instrument is used for measuring the Ampere-Hour of a battery charging system. Which class of measuring instruments does it belong to?
A:- Integrating instrument
B:- Recording instrument
C:- Indicating instrument
D:- None of the above
29- In induction-type energy meters, diametrically opposite holes are placed on the rotating aluminum disc. The purpose of this is to:
A:- Prevent disc from deformation due to excess torque
B:- Prevent the creeping of the disc
C:- Aid friction compensation
D:- Compensate for overloads
30- Which of the following is NOT a part of a Digital Energy Meter?
A:- ADC
B:- EEPROM
C:- Braking magnet
D:- Current sensor
31- The number of lightning strikes in a district is recorded against days of the year. The data is an example of:
A:- Continuous-time deterministic signal
B:- Discrete-time deterministic signal
C:- Continuous-time random signal
D:- Discrete-time random signal
32- Consider the system described by, k is a constant. The system is:
A:- Linear and Time-Invariant
B:- Linear and Time-variant
C:- Non-linear and Time-invariant
D:- Non-linear and Time-variant
33- Given a signal, The Nyquist sampling rate for this signal is:
A:- 150 Hz
B:- 1.5 kHz
C:- 3 kHz
D:- 6 kHz
34- A first-order hold converts an ideally sampled signal into:
A:- A delayed sampled signal
B:- A piece-wise linear signal
C:- A continuous and smooth signal that is the same as the original signal
D:- A piece-wise constant signal
35- Which among the following devices is used to sense angular position?
A:- LVDT
B:- Tacho-generator
C:- Strain Gauge
D:- Synchro
36- Hall-effect sensors can be applied to measure:
A:- Magnetic field
B:- Voltage
C:- Position
D:- All the above
37- Which of the following IE rules concerns the connection to Earth?
A:- IE 63
B:- IE 64
C:- IE 65
D:- IE 67
38- Which among the following is Not used as an earthing-enhancement compound?
A:- Charcoal and sand
B:- Bentonite
C:- Marconite
D:- Dolomite
ANSWERS:
25-(B), 26-(B), 27-(C), 28-(A), 29-(B), 30-(C), 31-(D), 32-(B), 33-(C), 34-(B), 35-(D), 36-(D), 37-(D), 38-(D)