Top Electrical Engg MCQ - 500+ MCQ
161
Brushes in a DC machine are normally placed electrically in the
162
Which of the following statement is TRUE?
163
The angle whose tangent is 1.732 is 60°. The negative sign indicates that the current leads the voltage. Q12: What is the value of the total impedance (in ohms) of a tank circuit working at resonant frequency having a capacitance of 0.01 mF and an inductance of 0.01 mH?
164
Determine the power dissipated (in W) by the 6 ohms resistor in the circuit given below.
165
A freewheeling diode is connected across an inductive load in switching circuits to:
166
If the field of a synchronous motor is under excited, the power factor will be
167
The Ward-Leonard system is primarily used for:
168
Here, the peak voltage V_m is 40 V. Therefore, V_rms = 40 / √2 ≈ 28.284 V. Which one of the following is the CORRECT relation between the peak value and RMS value of current for a sine wave?
169
A Light Emitting Diode (LED) produces light based on the principle of:
170
The function of starter in electric motor is
171
Melting temperature of tungsten is
172
The disadvantage of base resistor method of transistor biasing is that it
173
Which one of the following is the CORRECT expression for the self inductance of a solenoid?
174
Out of the four materials A, B, C, D, which will have the lowest retentivity?
175
The CE amplifier is most commonly used because of
176
material used for making electric plug is
177
Which type of starter used for fluorescent lamp?
178
The use of higher flux density in the transformer design
179
The Common Mode Rejection Ratio (CMRR) of an ideal operational amplifier (Op- Amp) is:
180
A DC generator can be termed as ____.