It is advisable to avoid the use of a (d)O.L. starter for starting an induction-motor having 5 H.P. capacity because
A 6 pole, 50 Hz, 3 phase induction motor has a full load speed of 950 R.P.M. At half load, its speed would be
In an induction-motor, the fractional slip(s) is given by the expression
A squirrel cage motor of above 3 H.P. should not be started by a D.O.L. starter because:
What is the value of x if x-y=6 and x+y=8
A man bought a lamp for Rs 100 and sold it for Rs 120. How much profit did he make? What is the profit percentage?
What is the term, if an article is purchased?
Which of the following is not a resource?
The motor suitable for loads where constant speed is required is
The Primary reason for D.C. motor Preferred over A.C. motor
Trying new things and finding new ways to do old things is called___________
A --------------- is one of the ways to reach your ----------------- goal.
The fractional slip of an induction motor is the ratio of
The minimum dielectric stress in a cable is at
When a person is naturally good at doing something, it is his/her___________
The number of stator poles produced in the rotating magnetic field of a 3-phase induction motor having three slots per pole per phase is
On switching 'ON' the starter, the magnetic contractor vibrates heavily. The possible cause is
The number of cycles a wave completes in one second is called?
A thermal overload relay is provided in a starter to protect the motor against:
Buchholz relays are used on
Which gate is known as the universal gate?
Total electrical degrees for a 4 pole (a) (c) machine is equal to
What is the function of a transformer?
Squirrel-cage induction-motor has: (
What is the unit of strain?
In a 3-phase induction-motor started by a (d)O.L. starter, protection against short circuit is given by the:
The unit of resistance is
A three point starter is considered suitable for
What is the ratio of change in length to original length?
How does a logic gate function?
Which one of the following 3-phase motors is NOT self starting?
The starting torque of a squirrel cage induction motor is low because of:
The reason of drawing high current at the time of starting by an induction-motor is:
The Government of India promotes apprenticeship through __________
As technology advances, the way we work shall -----------
The maximum valve of torque angle in a synchronous motor is ...... degrees electrocal
In a three phase induction motor, the cage bars of the rotor are arranged in an offset pattern to the axis of rotation in order to prevent...
In a 3-phase induction motor, the rotor field rotates at synchronous speed with respect to
What is the value of x if 13+x =20?
What is the value of any number raised to the power of 0?
The load of the electrical circuit is that part which:
Setting up date for completing each milestone is called_______
------------- safety is very important. All companies need to incorporate -------------- in their workspaces.
In a 3-phase induction motor started by DOL starter the short circuit current is protected by......
Calculate slip of an induction motor if it has 4 poles, 50Hz, rotor speed is 1400 rpm.
The work undertaken by a person for a period of time is called______
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