महाराष्ट्र अभियंता सेवा गट ब पूर्व परीक्षा २०१०

If the back emf in a d.c. motor vanishes suddenly, the motor will

The lamp that cannot sustain much voltage fluctuations is

A three-phase induction motor is fed from a balanced three-phase supply on the rotor side, short-circuiting the stator terminals. The speed of the rotating magnetic field is

The illumination at any point on a surface is directly proportional to the cosine of the angle between the normal at that point and direction of luminous flux. This statement is associated with 

Annual estimated depreciation charges for a plant are heavy during early years in case of

Analogue Measuring Instruments connected to AC circuit indicate

In controlled rectifiers, the nature of the load current i.e. whether load current is continuous or discontinuous 

The permissible variation of frequency in power system is

Minority carriers in p-type semiconductors are

large diversity factor of the load in a power system

A step-up chopper has V_s. as the source voltage and a as the duty cycle. The average output voltage for this chopper is given by

For a system having Z_S >> Z_L, which of the following relays is most suitable ?

A single-phase full bridge inverter can operate in load-commutation mode in case load consists of

Back to back HVDC is used to

Transient response in R-L-C series circuit with d.c. excitation is overdamped when

A 5 kVA transformer has iron loss 300 W and full load copper loss 400 W. The maximum efficiency of the transformer would occur when total loss is

Surge impedance of overhead line is of the order of

A voltage wave of 50 Hz, having an rms value of 415 V is expressed as

If the power consumed by a balanced system with delta connected resistances is 300 W, what will be the power consumed when the same are connected in star fashion ?