Subject Repository
Electrical Engineering Mcqs
Showing 2941 – 2960 of 3,699 verified multiple choice questions with answers and explanations.
Q2941NTS / FPSC / PPSC
If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor_____________?
Q2942NTS / FPSC / PPSC
The armature voltage control of D.C. motor provides_____________?
Q2944NTS / FPSC / PPSC
For a D.C. shunt motor if the excitation is changed_______________?
Q2946NTS / FPSC / PPSC
If I2 be the armature current, then speed of a D.C. shunt motor is_______________?
Q2947NTS / FPSC / PPSC
The speed of a D.C. shunt motor can be increased by_______________?
Q2948NTS / FPSC / PPSC
As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit____________________?
Q2949NTS / FPSC / PPSC
The armature voltage control of D.C. motor provides____________?
Q2950NTS / FPSC / PPSC
The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is______________?
Q2951NTS / FPSC / PPSC
Usually wide and sensitive speed control is desired in case of____________?
Q2952NTS / FPSC / PPSC
Which of the following method of speed control of D.C. machine will offer minimum efficiency ?
Q2953NTS / FPSC / PPSC
The armature torque of the D.C. shunt motor is proportional to____________?
Q2954NTS / FPSC / PPSC
As -the load is increased the speed of D.C. shunt motor will____________?
Q2955NTS / FPSC / PPSC
Which of the following motor has the poorest speed regulation ?
Q2956NTS / FPSC / PPSC
Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of_____________?
Q2957NTS / FPSC / PPSC
In a differentially compounded D.C. motor, if shunt field suddenly opens____________?
Q2958NTS / FPSC / PPSC