Related Questions

The insulation between windings and grounded core and the insulation between the windings of the same phase is
A minor insulation
B major insulation
C either of the above
D none of the above
The line insulation is the insulation level of the station equipment.
A less than
B same as
C more than
D proportional to
E not directly related with
Upto the critical radius of insulation, added insulation, will
A Increase the heat loss
B Decrease heat loss and will have no effect beyond that
C Decrease heat flux
D Reduce convection heat loss compared to conduction heat less
Insulation resistance of high voltage circuit breakers is more than
A 1 mega ohms
B 10 mega ohms
C 100 mega ohms
D 500 mega ohms
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
The critical radius is the insulation radius at which the resistance to heat flow is
A Maximum
B Minimum
C Zero
D None of these
Which of the following resistances can be measured by conducting insulation resistance test on a synchronous motor ?
A Phase to phase winding resistance
B Stator winding to earthed frame
C Rotor winding to earthed shaft
D All of the above
In a simple circuit, one end of a conducting wire is attached to an electric cell, and the other end to an electric outlet
A battery
B faucet
C socket
D appliance
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of
A Relative roughness
B Absolute roughness
C Friction co-efficient for flows at equal Reynold number
D All of the above
The voltage at one point in a circuit is always measured relative to another point.
A True
B False

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