AP ECET EEE 2018-8

1. In SCADA system, the RTU stands for

A. Remote Terminal Unit
B. Round Terminal unit
C. Remote Thermal unit
D. Round Thermal Unit

Answer : A. Remote Terminal Unit
Explanation:-

2. Which of the following tool is used for holding, gripping and cutting of wires?

A. Screw driver
B. hammer
C. cutting plier
D. hacksaw

Answer : C. cutting plier
Explanation:-

3. The wire running on the top of the overhead line, to protect from lightning is called as ______

A. Phase
B. Neutral
C. Stay wire
D. Earth wire

Answer : D. Earth wire
Explanation:-

4. In irrigation pump-sets the accidental opening of one of the supply lines is known as ____

A. three phasing
B. two phasing
C. single phasing
D. Neutral phasing

Answer : C. single phasing
Explanation:-

5. The rating of the fuse wire is always expressed in

A. amperes
B. volts
C. watts
D. ohms

Answer : A. amperes
Explanation:-

6. The current in a Zener diode is controlled by _______

A. Reverse-bias voltage
B. potential barrier
C. Zener diode resistance
D. External resistance

Answer : D. External resistance
Explanation:-

7. Each diode of half wave rectifier conducts for ______

A. 90 degrees
B. 180 degrees
C. 270 degrees
D. 360 degrees

Answer : B. 180 degrees
Explanation:-

8. The transistor used in amplifier circuit operates in ______ region

A. active
B. saturation
C. Cut-off
D. reverse

Answer : A. active
Explanation:-

9. The maximum efficiency of Class A amplifier is _____

A. 100 %
B. 81.8 %
C. 50 %
D. 30 %

Answer : C. 50 %
Explanation:-

10. The purpose of coupling capacitor in an amplifier is to ______

A. control the output
B. match the impedance
C. control the bandwidth
D. Prevent DC mixing with inout

Answer : D. Prevent DC mixing with inout
Explanation:-