Related Questions

A screw is said to be over hauling screw, if its efficiency is
A less than 50%
B more than 50%
C equal to 50%
D none of the mentioned
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as
A both ends fixed
B both ends hinged
C one end fixed and other end hinged
D one end fixed and other end free.
For hauling muck from the tunnel, the following type of muck-car is used:
A Muck box
B Side dump car
C U-bottom
D All of these
A screw is said to be a self locking screw, if its efficiency is
A Less than 50%
B More than 50%
C Equal to 50%
D None of these
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
A Knuckle threads
B Square threads
C Acme threads
D Buttress threads
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves
A Axially upwards
B Axially downwards
C Axially upwards or downwards
D None of these
If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated
A on its outer spindle with a relative motion between the vernier and graduated scale of lower plate
B on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate
C on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
D on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate
A survey was conducted among the students of Khulna University to find out how many forms of physical exercise usually swam, 25% said they usually did jogging, 20% said they played cricket, 15% said they usually played football and 20 respondents said they did not take any form of exercise. From the above findings it can be concluded that.
A The student of khulna University do not usually take physical exercise.
B No respondent took more than one form of exercise.
C The method of data collection was not valid.
D Some of the respondents took more than one form of exercise.
In a certain office, the human resources department reports that 60% of the employees in the office commute over an hour on average each day, and that 25% of those employees who commute over an hour an average each day commute by train. If an employee at the office is selected at random, what is the probability that the employee commutes over an hour on average by train?
A 0.10
B 0.15
C 0.20
D 0.25
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
A Plus
B Minus
C Divide
D None of these

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