Physics-Work and Machines [NSTSE (National Science Talent Search Exam- Unified Council) Class 6]: Questions 8 - 15 of 58
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Question 8
Question MCQ▾
Which is work as resistance in frictionless machine?
Choices
Choice (4) | Response | |
---|---|---|
a. | Effort | |
b. | Load | |
c. | All of the above | |
d. | None of the above |
Question 9
Question MCQ▾
In case of simple machines, ________ is the force that we apply on a machine.
Choices
Choice (4) | Response | |
---|---|---|
a. | Friction | |
b. | Load | |
c. | Effort | |
d. | All of the above |
Question 10
Question MCQ▾
With the help of simple machines, the weight we lifted or dragged is called:
Choices
Choice (4) | Response | |
---|---|---|
a. | Friction | |
b. | Load | |
c. | Effort | |
d. | All of the above |
Question 11
Question MCQ▾
Which of the following is not example of simple machine?
Choices
Choice (4) | Response | |
---|---|---|
a. | Seesaw | |
b. | Scissors | |
c. | Pulley | |
d. | Crowbar |
Question 12
Question MCQ▾
How many types of Lever are we used?
Choices
Choice (4) | Response | |
---|---|---|
a. | Four | |
b. | Three | |
c. | Six | |
d. | Two |
Question 13
Question MCQ▾
If the mechanical advantage of a device is 20 and load is 1000 N the effort will be:
Choices
Choice (4) | Response | |
---|---|---|
a. | 500 N | |
b. | 5 N | |
c. | 5000 N | |
d. | 50 N |
Question 14
Question MCQ▾
The efficiency of an ideal machine is:
Choices
Choice (4) | Response | |
---|---|---|
a. | 100% | |
b. | 80% | |
c. | 90% | |
d. | 92% |
Question 15
Question MCQ▾
In which of the following class of lever fulcrum is in middle?
Choices
Choice (4) | Response | |
---|---|---|
a. | Class III | |
b. | Not Mentioned | |
c. | Class II | |
d. | Class I |