Q.176 The output of a stepper motor is in the form of
A. Angular movements
B. Linear movements
C. Either (A) or (B)
D. none of the above
Ans.: C
Q.177 ______ has least range of speed control.
A. DC shunt motor
B. Synchronous motor
C. Slip ring Induction motor
D. Schrage motor
Ans.: B
Q.178 ______ method can bring the locomotive to dead stop.
A. Rheostatic breaking
B. Plugging breaking
C. regenerative breaking
D. None of the above
Ans.: B
Q. 179 ________ Method has leading power factor.
A. Arc heating
B. Induction heating
C. Resistance heating
D. Dielectric heating
Ans.: D
Q.180 _______ welding is not a resistance welding process.
A. Seam
B. Flush
C. Carbon arc
D. Projection
Ans.: C
Q.181 Filament lamps operates normally at a power factor of
A. Unity
B. 0.5 lagging
C. 0.8 lagging
D. 0.8 leading
Ans.: A
Q.182 The binary equivalent of decimal number 13 is
A. 1101
B. 1010
C. 1100
D. 1001
Ans.: A
Q.183 For measuring a very high resistance, we should use
A. Wheatstone bridge
B. Megger
C. Kelvin’s double bridge
D. None of the above
Ans.: B
Q.184 A power factor meter has __________ control springs.
A. two
B. one
C. four
D. no springs
Ans.: D
Q.185 Instrument transformers are
A. Potential transformers
B. Current transformer
C. Both (A) and (B)
D. Power transformer
Ans.: C
Q.186 Systematic errors are
A. Environmental errors
B. Instrumental errors
C. Observational errors
D. All of the above
Ans.: D
Q.187 For measurement of inductance having high value, we should use
A. Hay’s bridge
B. Maxwell’s bridge
C. Maxwell wein bridge
D. Any of the above
Ans.: A
Q.188 ________ has the least value of starting torque to full load torque ratio.
A. DC series motor
B. DC shunt motor
C. Slip ring Induction motor
D. Squirrel cage induction motor
Ans.: D
Q.189 The use of OPAMP is generally not preferred as
A. Sub tractor
B. Differentiator
C. Divider
D. Integrator
Ans.: B
Q.190 The failure % of electric motor is higher due to
A. Bearing failure
B. Insulation failure
C. Over loading
D. None of the above
Ans.: A
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