1 |
Frank Whittle is famous for invention of:
|
Ethyl gasoline <br>
Radar <br>
Jet Propulsion <br>
Sonar <br>
|
2 |
Igor Sikorsky is famous for invention of:
|
Jet engine air plane <br>
Hydroplane <br>
Helicopter <br>
Glider <br>
|
3 |
J.B. Dunlop is famous for invention of
|
Rubber boor <br>
Model air planes <br>
Automobile whee rim <br>
Pneumatic rubber tire <br>
|
4 |
George Pullman is famous for invention of:
|
Box car <br>
Air brakes <br>
Air ships <br>
Sleeping (railway) car<br>
|
5 |
Georg Westinghouse is famous for invention of:
|
Light bulb<br>
Electric razor <br>
Refrigerator <br>
Railway air brakes <br>
|
6 |
Kari Benz is famous for invention of:
|
Glider <br>
Gasoline powered automobile <br>
Streetcar <br>
Steam turbine <br>
|
7 |
Elisha Otis is famous for invention of?
|
Escalator <br>
Elevator <br>
Turbine <br>
Jet engine <br>
|
8 |
Elmer A. Sperry is famous for invention of:
|
Hydraulic turbine <br>
Hydroplane <br>
Gyrocompass <br>
Compass <br>
|
9 |
James Watt is famous for invention of?
|
Steam boat <br>
Diving bell <br>
Steam engine <br>
Hot air balloon <br>
|
10 |
Benjamin Franklin is famous for invention of
|
Bifocal Spectacles <br>
Barometer <br>
Radio <br>
Hygrometer <br>
|