1. Which is the first autopilot ship?
a) Tesla Model S
b) NEXT TWO
c) J.A Moffet
d) Nissan LEAF
Explanation: J.A Moffet was the first autopilot ship. It was a standard oil tanker that became the first ship to use auto pilot in 1920’s. Autopilot systems are fully automatic systems that can constantly control vehicles trajectory without manual guidance.
2. When was first autopilot system developed?
a) 1911
b) 1912
c) 1932
d) 1931
Explanation: The first autopilot system was developed in the year 1912 by Lawrence Sperry. It was just 9 years after wright brothers developed their airplane Kitty Hawk. Sperry’s invention was also named as “Gyroscopic automatic pilot”.
3. Which is the first helicopter with autopilot?
a) Piasecki HUP Retriever
b) NEXT TWO
c) J.A Moffet
d) Nissan LEAF
Explanation: Piasecki HUP Retriever is the first helicopter with autopilot. It was developed by Piasecki Helicopter Corporation of Morton, Pennsylvania. It has a single radial engine with twin overlapping tandem rotor.
4. Who developed the first autopilot system?
a) Lawrence Sperry
b) Joseph Henry
c) Norman Bel Geddes
d) Walther Bothe
Explanation: Lawrence Sperry was an American inventor who developed the first autopilot system. Sperry’s invention was also named as “Gyroscopic automatic pilot”. This system automatically balanced the plane.
5. When was the first steering wheel made?
a) 1911
b) 1894
c) 1832
d) 1831
Explanation: The first steering wheel was made in the year 1894. It is the earliest trace of the presence of steering wheels which was used by Alfred Vachero in his 4 horse powered custom car to participate in Paris-Rouen race.
6. What are transducers?
a) They convert power from one form to another
b) They convert work from one form to another
c) They convert work to power
d) They convert energy from one form to another
Explanation: Transducer are devices that convert energy from one form to another. This energy can be either mechanical energy, light energy, heat energy or any other forms of energy.
7. Active transducer do not require any type of additional power source for an operation.
a) True
b) False
Explanation: Active transducers do not require any additional power source for converting the energy from one form to another as they work on the principle of energy conversion. One such example of active transducer is thermocouple.
8. What type of energy conversion does a piezoelectric transducer perform?
a) It converts mechanical energy to sound energy
b) It converts sound energy to mechanical energy
c) It converts mechanical energy to electrical energy
d) It converts electrical energy to mechanical energy
Explanation: A piezoelectric transducer converts mechanical energy to electrical energy. They are generally used to detect a knock or any impulsive force. They are also used in electronic drum pads to detect the impulse provided by the drumsticks.
9. Pirani Gauge is an example of which type of transducer?
a) Pressure transducer
b) Temperature transducer
c) Light transducer
d) Mechanical transducer
Explanation: Pirani Gauge is a pressure transducer. It’s a thermal conductivity gauge used to detect pressure in vacuum conditions. It was named after a German physicist “Marcello Stefano Pirani” who invented it in 1906.
10. The IC LM35 is used as which type of sensor?
a) Pressure sensor
b) Temperature sensor
c) Light sensor
d) Mechanical sensor
Explanation: The LM35 IC manufactured by Texas Instruments is used as a temperature sensor. The output voltage generated by this IC is linearly proportional to the temperature in Centigrade. The output voltage is directly proportional to the temperature.