Question47:-If the resultant of two forces has the same magnitude as either of the forces, then the angle between the
forces is
A:-30°
B:-60°
C:-45°
D:-120°
Correct Answer:- Option-D
Question48:-One Newton is equivalent to
A:-1 kg.wt
B:-9.81 kg.wt
C:-981 dynes
D:-(1)/(9.81)" kg.wt
Correct Answer:- Option-D
Question49:-Crushing strength of a good building stone should be more than
‏-ھ‎ MPa
B:-100 MPa
C:-150 MPa
D:-200 MPa
Correct Answer:- Option-B
Question50:-The percentage of Alumina in good brick earth lies between
A:-20 to 30%
B:-40 to 50%
C:-50 to 60%
D:-70 to 80%
Correct Answer:- Option-A
Question51:-Le Chatelier's test is used to determine the
A:-Soundness of cement
B:-Setting time of cement
C:-Tensile strength of cement
D:-Compressive strength of cement
Correct Answer:- Option-A
Question52:-Basic purpose of retarder in concrete 15
ക: increase the initial setting time of cement paste in concrete
B:-to decrease the initial setting time of cement paste in concrete
C:-to render the concrete water tight
D:-to improve the workability of concrate mix
Correct Answer:- Option-A
Question53:-Theodolite is an instrument used for
A:-tightening the capstan headed screw of level tube
B:-measurement of horizontal angles only
C:-measurement of vertical angles only
D:-measurement of both horizontal and vertical angles
Correct Answer:- Option-D
Question54:-The process of tuming the telescope about the vertical axis in horizontal plane is called
A:-transiting
B:-reversing
C:-plunging
D:-swinging
Correct Answer:- Option-D
Question55:-Scale on which three dimensions can be measured called
A:-Plain scale
B:-Diagonal scale
C:-Shrunk scale
D:-Comparative scale
Correct Answer:- Option-D
Question56:-As per Indian standard, length of one link in 30 m chain should be
A:-40 €m
B:-30 cm
C:-10cm